Good afternoon, ladies and gentlemen. Thank you for joining Dropbox's Second Quarter 2018 Earnings Conference Call. All participants will be in listen-only mode. [Operator Instructions] After today's presentation there will be an opportunity to ask questions. As a reminder this conference call is being recorded and will be available for replay from the Investor Relations section of Dropbox’s website following this call. I will now hand the call over to Darren Yip from Dropbox's Investor Relations team. Please go ahead.

Thank you. Good afternoon and welcome to Dropbox’s second quarter 2018 earnings call. Today, Dropbox will discuss the quarterly financial results that were distributed earlier. Statements on this call include forward looking statements, including statements relating to the expected performance of our business, future financial results, strategy, long-term growth and overall future prospects. These statements are subject to known and unknown risks and uncertainties that could cause actual results to differ materially from those projected or implied during this call. In particular, those described in our risk factors included in our Form 10-Q for the quarter ended March 31, 2018, and the risk factors that will be included in our Form 10-Q for the quarter ended June 30, 2018. You should not rely on our forward looking statements as predictions of future events. All forward looking statements that we make on this call are based on assumptions and beliefs as of today, and we undertake no obligation to update them except as required by applicable law. Our discussion today will include non-GAAP financial measures. These non-GAAP measures should be considered in addition to and not as a substitute for or in isolation from our GAAP results. A reconciliation of GAAP to non-GAAP results may be found in our earnings release which was furnished with our Form 8-K filed today with the SEC and may also be found in the supplemental investor materials posted on Investor Relations website at investors.dropbox.com. I would now like to turn the conference call over to Dropbox's Co-Founder and Chief Executive Officer, Drew Houston. Drew?

Thanks, Darren. Good afternoon, everyone and welcome to our earnings call. On the call with me are Dennis Woodside, our Chief Operating Officer; and Ajay Vashee, our Chief Financial Officer. Before we discuss the results, I want to take a moment to thank Dennis for all of his contributions to Dropbox. As you know earlier today we shared that Dennis is stepping down in his role as COO and his last day will be September 4th and will stay on as advisor through the end of the year. It's hard to overstate Dennis's impact on Dropbox. When he started, we had a $200 million in revenue and our company was a fraction of the size. And during his time here, we've grown into a publicly traded company with over $1 billion in annual revenue and a dozen offices around the world. Dennis has been a critical part of our company's evolution and he has helped us reach operation maturity, and he has helped us through the important milestone of an IPO. While we're starting to see him go. He's leaving the business in great shape and in the hands of an incredible team he has helped to build. I'm excited to share that we are promoting two of the senior leaders to take on his responsibilities Yamini Rangan, who will become Chief Customer Officer and oversee our customer and partner focused functions, including sales and marketing and business development. And Lin-Hua Wu, our current VP of Communications. Yamini brings over 18 years of experience from companies like SAP and Workday, while Lin joined us a few years ago from Square and brings more than 15 years of experience in communications. I know we'll benefit from their perspective and leadership and Dennis we'll miss you and wish you all the best in your next venture.

Thanks, Drew. It's been an incredible four years and truly an honor to be part of the Dropbox journey with you, Arash and the entire team. I'm grateful for my time here, I know the business is well positioned of the future. I'm a huge believer in this team and in Drew's vision for the company.

Thanks, Dennis. Let's continue with the call. I'll touch on our business and product highlights. Dennis will give you an update on our go-to-market strategy and ecosystem and Ajay will review our Q2 financial results and provide guidance for Q3 and fiscal of 2018. Q2 was another great quarter, with revenue growth of 27% year-over-year driven by continued paying user growth and meaningful ARPU expansion. We also generated a strong non-GAAP operating margin, which helped us deliver solid free cash flow. Overall, our results continue to demonstrate the strength of our global collaboration platform, our efficient go-to-market strategy and our operational discipline. So let's move on to our product update. We achieved some important milestones in Q2 that made the Dropbox experience for our users, teams and admins even better. Last quarter we announced more than a dozen new features to enhance the Dropbox mobile app, paper, showcase and admin functionality. Let's start with the mobile app. On our mobile app we introduced new features to help users collaborate more easily with their teams while on the go. Users can now add comments, access feedback and see file activity updates, while previewing a file in Dropbox. These updates are great for getting quick pulse on how our users work is moving along without disrupting a team’s flow. Features like these, help make Dropbox an intelligent workspace for people to collaborate on all of their content across all of their devices. Turning to Paper, one of the new product features, I have been most excited about was launched in direct consumer sponsor feedback from our users. The ability to turn any paper dock into a sharable template. Paper templates helps our users start docks without having to format them from scratch so that teams can get projects moving quickly. Features like…

Thanks, Drew. The kind of innovation that Drew highlighted increases the attractiveness of our platform and helps drive our go-to-market momentum. In Q2 we saw this materialize with strong adoption of our premium team subscription plan Dropbox Advanced. As you may recall, we launch Dropbox Advanced a little over a year ago, and it offers sophisticated administrative security and device management functionality, along with new products like Showcase. At the time of the launch, we grandfathered all existing standard teams into the Advanced plan at their legacy price point. As of the end of Q2 2018, we completed the renewal process for nearly 50% of grandfathered teams. A meaningful portion of these teams elected to remain on our Advanced plan at an approximately 30% price premium helping to life ARPU in the quarter to $116.66. While still early these results demonstrates that our users are driving real value from our premium team features. Going forward, renewals from grandfathered teams will be more evenly spread across the next few quarters. We're also focused on driving higher adoption of our premium individual subscription plan. Towards the end of 2017, we launched Dropbox Professional at a 100% price premium to our plus plan. Based on user feedback and experimentation across the first half of this year, we determine that further segmenting storage capacity between our individual plans would help to differentiate our product range and drive further adoption of Dropbox Professional. As a result, we recently increased the storage cap for our professional plan from 1 terabyte to 2 terabytes. We believe that this change will serve a tailwind to ARPU and be net positive to margins in future periods. We've also been working to improve our data science models and self-served growth engine. Our large user base gives us access to hundreds…

Thank you, Dennis. Our Q2 results continue to demonstrate our strong execution and focus on delivering top-line growth and free cash flow generation. Total revenue for the quarter was up 27% year-over-year to $339 million, driven by an increase in total paying users and strong ARPU expansion. We ended Q2 with 11.9 million paying users, with the majority of growth primarily driven through our self-serve channels. We also saw healthy uptake of our Premium, Professional, and Advanced plans, with a strong tailwind from the expiration of a grandfathering period for certain team subscribers, as Dennis mentioned earlier. ARPU was $116.66 in Q2, up 5% from $111.19 a year ago. Before I move on, I want to note that unless otherwise indicated, all income statement measures that follow are non-GAAP and exclude stock-based compensation, as well as an equity-based charitable donation to the Dropbox Foundation in Q2 of 2017. A reconciliation of GAAP to non-GAAP results may be found in our earnings release, which was furnished with our Form 8-K filed today with the SEC, and in the supplemental investor materials posted on our investor relations website. Gross margin for the quarter was 74%, an increase of 7 percentage points compared to the second quarter of 2017. The increase in gross margin was primarily driven by unit cost efficiency gains with our infrastructure hardware, including lower depreciation as a share of revenue. We expect depreciation to continue to decline as a percentage of revenue in the second half of 2018, offset by higher spend on network expansion as we grow our global footprint. We continue to expect gross margins to be approximately 74% across the remainder of fiscal 2018. Moving to operating expenses, second quarter R&D expense was $92 million, or 27% of revenue, compared to 26% in Q2 a year…

Thank you, Ajay. In closing, we had another quarter. In Q2, we added new features to improve our user and admin experiences, strengthen our infrastructure, and were recognized by Gartner as an industry leader. We achieved all of this while driving solid growth and a strong operating margin. On behalf of our management team, I'd like to take a moment to thank our customers, partners, and the entire Dropbox team. With that, I'd like to open it up for questions. Operator?

Thank you. Ladies and gentlemen, at this time, we'll begin conducting a question-and-answer session. [Operator Instructions] Our first question comes from the line of John DiFucci with Jefferies. Your line is open.

Thanks for taking my question. Zach Lountzis for John. Just wanted to dig in on the RPU with the pricing of the Advanced plan there. I think you guys said 30% uplift, implying that the 60% list price it was discounted for the first year. Can you just kind of elaborate on that? Does it go back to the 240 aside from traditional discounting after that? Then any color on churn in the quarter? Particularly given the end of grandfathering here. Thank you.

Sure, this is Ajay. I'm happy to take that question. To the first part of your question on the price premium for grandfathered team subscribers, at this time, for folks that are coming up for renewal, our monthly subscribers, as well as for annual subscribers that reach an expiration period last quarter, a meaningful portion of them elected to remain on our Advanced plan at roughly a 30% price premium. That's a step up from their legacy price point, but it's not full list price for the Dropbox Advanced SKU. I think looking forward, it's a little bit early for us to comment on any future pricing-related initiatives. But I do want to clarify that for us, that RPU expansion that we've driven is really a reflection of the value that we're delivering to our users. It's a function of higher attach rates to our premium SKUs and not a general pricing increase. To your second question on color on churn in the quarter, we don't disclose churn on a regular basis. We did provide some color on gross retention rates as part of the IPO process. Churn for us has been stable and improving for many quarters and for a long period of time. I can't say on the margin with initiatives like grandfathering expiration for Dropbox Advanced it's a meaningful driver of revenue growth, but can impact in-period churn. So, nothing notable there, but on the margin it can have an impact on in-period churn.

Great, okay. Thanks a lot, guys.

Thank you. Our next question comes from the line of Heather Bellini with Goldman Sachs. Your line is open.

Hi, this is actually Ted Lin on for Heather. Thank you very much for taking my question. On the strong RPU growth, how much of it is being driven by a one-time grandfathering effect versus new customers selecting more premium SKUs? What are the biggest features that are leading users to select the Advanced and Professional SKUs?

At a high level, it's certainly driven by the work we've been doing to create higher tier SKUs and higher adoption among our customers of those higher tier plans and then also a general drive toward getting our customers to adopt the Business version of Dropbox. So, I would say across the board, all those things. Ajay can comment on some of the numbers.

For some more specific Q2 commentary, I would say the higher RPU was driven by a few different factors. One was increased adoption of our Professional and Advanced SKUs. Both from gross new subscribers, but also from increased adoption from grandfathering expiration, as well as a higher mix of teams' licenses. And so we are seeing a mix shift toward more and more teams licenses as a percentage of net new licenses added to the platform. But just to comment on grandfathering for a moment. We did complete that process -- just to reiterate what Dennis said earlier -- for about 50% of grandfathered teams last quarter. A meaningful portion did elect to renew at a higher price point to our Advanced plan. I would say adoption of premium SKUs more generally inclusive of grandfathering was the primary driver or RPU expansion for us, but there are other drivers. Things like this customer journey that we're facilitating from individual plans to team plans and that subscriber mix shift over time.

Great, thanks. That's very helpful. As my follow-up, I notice that your R&D ticked higher as a percentage of revenue versus the year-ago period. How do we think about the cadence of the introduction of potential new SKUs? I think the Advanced SKU came early last year and the Professional SKU was kind of a later timeframe last year. So, any kind of color on how you're thinking about the introduction of new, premium SKUs would be helpful. Thanks.

Well, I think we want to make sure -- we don't have any plans to change our SKUs meaningfully. We did want to create multiple tiers and you'll notice that new functionality like Showcase and Smart Sync is only available in either the Business version of our product or in some cases, the highest tier individual plans. So, we want to continue to evolve and differentiate those SKUs and strike the right balance between being able to capture more of the value that we deliver and have some level of price discrimination or matching our customers who really get a lot of value out of Dropbox to higher tier plans, but we also want to keep things simple. So, I would say our focus will be on improving the experience and driving more adoption of the higher tier plans and moving people along that journey from frees to maybe a paid individual subscription, to a paid corporate subscription, and then the higher tier plans within that.

Excellent. Thank you for the color.

Thank you. Our next question comes from the line of Mark Murphy with J.P. Morgan. Your line is open.

Yes, thank you. I'm curious what is your early telemetry on the effectiveness of the Dropbox television advertising campaign that you launched, I believe, late last year? Are the views and impressions you're getting there helping to drive RPU or retention or user additions in any measurable way?

Hi, Mark. It's Dennis. Thanks for the question. So, the majority of our investments in our brand campaign was actually made through digital channels because we feel by and large that's a highly effective way of reaching prospective customers. You'll recall that one of the objectives of the campaign, the primary objective, was to shift perception slightly among people who might be considering Dropbox as a collaborative platform. So, the focus was on explaining how Dropbox helps teams unleash their creative energy. We had fairly rigorous metrics that we had in place, both pre- and post-campaign, measuring among our target audience, which in that case were people who were likely to be considering forming a Dropbox team. We saw considerable lift among all the metrics that we wanted to track there. We don't directly link that to or expect our brand campaign to be driving immediate changes in monetization. We think that's a longer term investment over time. We think it's important as we have more collaboration features in Dropbox, that people think of Dropbox as a broader collaboration platform, which is a reason to continue investing in brand.

Okay. Thank you, Dennis. As well for Ajay, is it fair to think that the Dropbox engine overall is being built for fairly consistent growth in new user adds, but then clearly there's more attrition naturally as you scale and that therefore RPU is going to be a more important driver and I guess I'm curious what you would think if we were modeling the net new user adds that perhaps 350 to 550 per quarter going forward. Do you think that's a reasonable range moving forward to try to find the right balance between the user adds and the RPU growth, which has been a very healthy total equation for you?

Thanks, Mark. Happy to answer the question. I would say at a high level, our strategy continues to be to drive revenue growth through a combination of paying user conversion to our individual and team plans, as well as RPU expansion. That's what drove revenue performance last quarter and that will able to drive revenue growth in the future. To comment specifically on your question on net new paying user adds, we added approximately 400,000 paying users in Q2, and we continue to add paying users at a healthy rate. I would say in any given quarter, the paying user conversion lever and the RPU lever, one may outpace the other depending on the initiatives that we're deploying in that period, but to comment on a point that you made specifically, our engine for gross new paying user adds has been very consistent over the past few quarters and the past few years. There can be some quarterly variability there based on things like the timing of larger outbound and EDU deals, as well as major initiatives like our grandfathering expiration for Dropbox Advanced, which can impact on the margin things like churn.

Okay, thank you very much.

Thank you. Our next question comes from the line of Alex Zukin with Piper Jaffray. Your line is open.

Thanks for taking my question and congrats; another strong quarter. I guess maybe piggybacking on Mark's question a little bit in terms of modeling. As we look at the first half performance, particularly on the RPU side, has been accelerating growth on RPU. As you think about the back half of the year, given the slightly tougher comps, how should we think about the second half RPU growth versus the first half RPU growth? I've got a quick follow-up.

This is Ajay. I'm happy to take that. Again, I would just reiterate both paying user growth and RPU growth are important levers for us. Looking forward, paying user conversion will continue to be the primary growth driver. RPU expansion will also contribute to growth. Some commentary on RPU as you think about building your model. In Q2, we did see an outsize move in RPU, given that we completed the renewal process for about half of grandfathered teams. So, going forward, renewals from grandfathered teams will be more evenly spread across the next few quarters, so I'd expect more moderated expansion in RPU going forward.

Okay, great. Then maybe just one for Drew or Dennis. A bigger picture question on your enterprise pipeline and enterprise traction. Then in general, when you boil up to a significance deal for one of these larger companies, who are you usually displacing and what budget are you usurping? I'm trying to figure out -- are they considering you more as a next-generation enterprise content management player? Or kind of in the collaboration and productivity area? Thanks, again.

This is Dennis here. Typically, when we're selling into larger enterprises, we're dealing with the CIO or a senior level IT director. Sometimes, it depends on the organization, that's someone who is responsible, if not the CIO, who is responsible for collaboration. Other times, it's the person who's responsible for infrastructure and in some cases, dedicated storage. We displace a lot of different solutions. So, in many organizations, they are still relying on fairly distributed file servers. Some organizations we are displacing small and fragmented SharePoint deployments. In other cases, it literally is hard drives. An example there from earlier this year was Clear Channel, which has offices all throughout the United States. Each of them has a file server under a desk somewhere, which is, when you think about it, not particularly secure. The central organization has no real visibility into what's going on there. So, moving to cloud makes a lot of sense in that organization and putting all those files in one place where you can secure it and have visibility to it. So, that's typically the kind of budget that we're going after and the kind of return we can drive is both driving enhanced security, but also all those older solutions are costly to maintain and Dropbox is a very cost-effective solution for those organizations.

Drew here. Just adding a little bit more. We find that a lot of what drives adoption and eventually drives adoption by IT is just how end users organically use Dropbox. We're finding that more and more end users choose more of the tools that they're using day-to-day. They're mixing and matching from different office suites. There's a level of fragmentation that's increasing where the employees turn to Dropbox to help them tie all of that together. Increasingly we find that, especially in the future, IT is turning to Dropbox to help with the governance and securing all that data, especially in the world of GDPR and so on. So, another point is that competition isn't necessarily zero sum for us. We live side-by-side with the office suites. We find that our users are invariably either using Office for a variety of use cases, or they're using the Google ecosystem for a variety of use cases, or they're using a bunch of other SaaS tools for different use cases. We find that in a collaborative setting, that bottom-up adoption plays to our strengths because people need to work across different ecosystems.

Okay. Thank you, guys.

Thank you. Our next question comes from the line of Richard Davis with Canaccord. Your line is open.

Thanks. You guys are getting nice early traction with Dropbox teams. I kind of think about that. To what extent in your product roadmap and you had a little bit of it already, but does it make sense for you guys to kind of build out a workflow or BPM engine to kind of surround that product? You have a little bit of it, but does it make sense to build that out? Thanks.

So, we certainly want to address that use case, although we'll likely do it in a way that differs from how it's been done historically. Specifically, we want to take a more integrated approach, rather than some separate workflow tool. So, the way that shows up in the products includes evolving our preview surfaces to include commenting and annotations and a bunch of collaborative features that are in line with the content. We bring a lot of the coordination features together with the content. Dropbox Paper is another example of that, where you can embed the content that's in your Dropbox or really any kind of cloud content, and then when you have a team working around that content within a Paper doc, you can also have not just comments and conversations, but you can also assign tasks. Instead of using several different tools and toggling back and forth between them, we think there is increasing need and increasing demand to have a more integrated approach and one that's a lot more streamlined and involves less overhead than traditional workflow tools or project management tools.

Got it, that's very helpful. Thank you.

Thank you. Our next question comes from the line of Justin Post with Bank of America. Your line is open.

Thanks for taking the question. This is Ryan Goodman for Justin. Two for me. The first one, I think you've talked a lot about the upsell strategy. I think that's pretty apparent at this point and you've also discussed efforts around new enterprise customer acquisitions. I'm curious, can you talk more specifically to initiatives under way for converting the current non-paying users more at the top of the funnel? Is this still an opportunity you're looking at and are there initiatives that you should talk about to accelerate individual planned adoption at the top? Then, second question for me and I'll let you answer. On the competitive landscape, there has been some noise during the quarter. One of your larger competitors announced a stand-alone enterprise storage solution. Others have been enhancing their offerings in the cloud as well. Are you seeing any change in the dynamic of customer conversations around this? Have you had to adjust your go-to-market approach at all? Just any color on that would be helpful. Thank you.

This is Drew. I'll take the second part first and thanks for your questions. So, for sure, of course the other folks in our space will continue evolving our products. That said, we don't see these changes meaningful changing the competitive landscape for us. Importantly, when you talk about a stand-alone storage offering and Google pricing for storage, our higher tier, our Advanced and our Enterprise SKUs at Dropbox Business already include unlimited space. In fact, we see ourselves as favorable on that dimension. So, for sure, we keep an eye on competition, but we're more focused on our customers and more focused on just improving our core product experience. As far as driving adoption of paid plans more generally and just driving conversion with the business, one area where we make huge investments in what we call product-driven conversion. So, because over 90% of our revenue comes from self-serve, we've managed to automate a lot of the activities that would otherwise be done by a sales team or a marketing team. More and more using technologies like machine learning, AI, data science, not only to improve the end user product experience, but also to match our customers with the paid plans that make sense for them and to get them to engage with functionality that they might not be aware of. For example, if you're using a lot of space in your Dropbox and don't have a lot on your computer, we might show you something about Smart Sync. Or if you're sharing a bunch of rich media, we might show you something about Showcase. So, showing people these offerings in context is an area where we make a big investment in product-driven conversion and that's at the root of a lot of the improvement you've been seeing over the years in RPU and the attach rates to our paid plans. We will continue to invest there for the years to come.

Okay, thank you.

Thank you. Our next question comes from the line of Karl Keirstead with Deutsche Bank. Your line is open.

Thanks. I've got two for Ajay. Ajay, if we could go back to the sub-adds, your 400,000 was solid, but it was a little bit light compared to 500,000 to 600,000 that you put up the last bunch of quarters. In response to a prior question, you mentioned just generally variables that can impact that, but I'm wondering if you could zero in on 2Q and just help us understand what might await on it in the quarter and then I've got a follow-up for you.

Sure. So, in the quarter, I would reiterate what I said before. Those were some of the drivers of our net new paying user adds in the quarter. A few points. One, that engine for gross new paying user adds has been very consistent over the past few years and that continued to be consistent in Q2. There can be some quarterly variability, so things like the timing of larger outbound and EDU deals, as well as major initiatives like grandfathering expiration for Dropbox Advanced, the latter can impact in-period churn on the margin, and so those were some of the factors we saw last quarter.

Okay. Good. That's helpful. Then maybe a follow-up for you. I think a decent portion of Dropbox revenues may be denominated in non-U.S. dollars, yet I haven't heard you mention any kind of an FX impact. Maybe it's small? But I thought I'd ask.

Sure. It's a good question. Quarter-to-quarter, movements in FX rates have a smaller impact on top line for us, given how our revenue recognition model works. The vast majority of our revenue is already on our books as deferred revenue heading into a given quarter at historical FX rates. So, for us, movements in FX rates or currencies have less of an impact in the near term versus the long term. Where they can have a more pronounced impact is on things like billings and free cash flow and what we noted in our S-1 was that about 30% of our sales are denominated in foreign currencies, so non-USD.

Got it. Was there any FX impact or would there by on let's say cash flow in 2018, Ajay?

Well, I can say that the guidance that we gave for revenue and for free cash flow is net of any movements that we're seeing in currency and FX today.

Okay, very good. Thank you.

Thank you. Our next question comes from the line of Sarah Hindlian with Macquarie. Your line is open.

Thank you very much and congratulations on the quarter, guys. My first question, the balance sheet is looking really healthy, so I thought it would be helpful if you could give us a reminder in terms of how you're thinking about cash usage and proceeds, and then I have a follow-up.

Hi, Sarah. Our business has been cash flow positive for the last couple years. Our IPO, in many ways, was opportunistic. Having a healthy balance sheet gives us optionality on a number of dimensions to both invest in our core business, M&A, and pretty much whatever comes along. We think it's just a good idea to have a healthy balance sheet. Ajay can also add some color.

I would just reiterate what Drew said. We think it's important to make sure that we have the right operational cash on the business. It's a free cash flow positive company. We feel good about our position there. But then also having dry powder to pursue strategic initiatives is important to us and we feel like we have the appropriate amount of capital on our balance sheet today to five us the flexibility that we need over the next few quarters and year.

Thank you, Dennis, and Ajay. That was helpful. I'm thinking about, my follow-up really, when I'm thinking about investment areas, you made a lot of updates to Paper. Some of them pretty small, but some of them a little bit more significant in the quarter. How are you prioritizing for the add-on attach services investment areas to drive more adoption of Advanced plans?

We think of these improvements as part of a portfolio. Some of these improvements like Showcase will drive monetization pretty directly because Showcase is an example of the future. That's only available in Dropbox Business and in the Professional highest tier individual SKU. Others will drive more engagement in the Dropbox ecosystem. So, you think about Dropbox Paper, that's more broadly available, and we find that, as we said before, Dropbox Business teams that have Paper usage convert and retain at higher rates than ones who don't. So, that drives retention, drives lifetime value, even though it's not a separate SKU. We have a number of levers to drive engagement and monetization. Sometimes they'll be driving adoption of higher tier SKUs and then sometimes it'll be driving engagement more generally.

All right. Thank you very much.

Thank you. Our next question comes from the line of Greg McDowell with JMP Securities. Your line is open.

Great, thank you very much. I first want to ask about infrastructure and Magic Pocket. You mentioned you're the first major tech company to adopt SMR. The thing that really stood out to me from the June blog posts were lower costs, greater density, and better cost structure. So my question is, in the longer term, how would we think about this SMR technology impacting your infrastructure costs and maybe your CapEx needs as a percentage of revenue? And then maybe one follow-up.

We think SMR is a great example of one of just a technical achievements. One of the barriers to adopting SMR or cutting edge technologies like that are that you have to customize your applications and change a bunch of things from an engineering standpoint, which our team was able to do because we control our entire stack. It's a good example of not only providing a cost advantage, but also flexibility because adopting SMR would not be an option at this moment through the public cloud. We think that it's a good example of how being more integrated or vertically integrated in the long run is a big advantage, especially as workloads evolve and things like machine learning and compute become a bigger part of the picture. Ajay can add more color on the cost effectiveness.

This is Ajay. While we aren't providing specifics on our future savings projections from SMR today, I can say that it will be a phased, multi-year undertaking for us and one of the drivers of gross margin expansion toward our long-term target of 76% to 78% of revenue.

Again, it's an example as the technology evolves in all parts of the supply chain, we can ride that cost curve down a lot faster than if we had to wait for other folks to pass it along to us.

Thanks. One quick follow-up. Not to beat a dead horse with this grandfathering, but we've talked a lot about the grandfathering expiration of Dropbox Advanced, which was introduced in January of '17, so we're feeling the tailwinds sitting here18 months later. I wanted to ask about actually the Professional SKU for individuals, which was introduced in November '17, so a full 11 months after Advanced. I guess my question really is how should we think about the grandfathering expiration phenomenon of that professional SKU for individuals compared and contrasted against the Advanced SKU? Thanks.

In short, and it'll be a little bit more moderated because the with the grandfathering on the Business side, folks that were on the original Dropbox Business plan were defaulted into a higher tier SKU. That's not the case with Plus and Professional. So, it will affect certainly the presence of the higher tier SKU is an opportunity that presents itself immediately for new users or for new subscriptions and we will, of course, Professional is also available to folks who have the Plus subscription and we're interested in driving up sales there too, but it's not the case that we'll be opting everyone in or all existing Plus users into Professional. It's a little bit of a different dynamic.

This is Ajay. Just to clarify, we have not to date and don't plan to in the near future grandfather existing Plus subscribers into the Professional SKU. So, we're taking a different approach and strategy there relative to what we did with our team subscribers and Advanced plan. That being said, to reiterate what Drew just said, we are focused on driving higher and higher attach rates through different levers to that Pro SKU.

Yes, so continuing to improve features like Showcase, we found a lot of our customers are emailing us saying that they needed more than a terabyte of space and didn't want to buy multiple licenses of a Business subscription if they were a freelancer, so we didn't have that alternative available to them. There are a lot of levers that we have to drive higher adoption of Professional and our higher tier SKUs, in general.

Got it, thanks.

Thank you. Our next question comes from the line of Mark Mahaney with RBC Capital Markets. Your line is open.

Thanks. Most of questions have been already asked and answered, so maybe just two. Any color on international markets? Those that may be performing better, those that may be challenging? Then for Dennis, I get all the details. We get all the details on your stepping down, but can you give a little more color on the why you're stepping down? Now are you going to go join a cryptocurrency start-up or something? Thanks a lot.

That's a great idea. Thanks for the question. Let me start with the second one first. When I joined Dropbox, one of the challenges that Drew set out for me was help build a world-class team that can scale the business. First to scale it into a public company, but then scale it over time. We've really done that. I think you see with the leadership changes, we have two very strong leaders who are stepping up to Drew's team. Lin, who has led communications here for a number of years and is a professional in the Valley with deep experience. Yamani Rangan, who has been in sales roles for over 20 years at companies like SAP and Workday. So, one of the roles of a good leader is to know when to step aside and let the next generation take over. The business is in great shape, so Drew and I have been talking about it for a while. This seemed to make a lot of sense. There's no immediate plans. I'm going to remain an advisor to the company through the end of the year. I'm involved in a couple Boards already, the Red Cross and Service Now, so I'll obviously I'll stay involved with them and then figure out what's next. I think on the international question, international is a huge opportunity for us. Close to half the revenue is coming from outside the U.S. Those markets tend to be a couple years behind in cloud adoption. We're seeing markets like Japan, in particular -- I think I talked about Japan last time -- really accelerate. But our primary markets are Western Europe, so the U.K., France, Germany, Australia, and Japan. That's where we see most of our growth. We're seeing some growth in areas that we wouldn't have otherwise expected. I talked about Bundesbank in my remarks. That's an example of a customer who came to us through self-serve and we were able to grow. We think we see a lot of opportunity outside the U.S.

Okay. Thanks, Dennis and congratulations.

I just want to echo that Dennis can never truly be replaced, but we're very excited that the transition provides an opportunity for Lin and Yamani to step into bigger roles and I think that's a testament to the team that Dennis has built.

Thank you. We have time for one more call. Our last question comes from the line of Rishi Jaluria with D.A. Davidson. Your line is open.

Thanks for squeezing me in. Ajay, I just wanted to dive a little deeper on the margin guidance based on your guidance of the year. Operating margins are going to drop from 12.5% so far year-to-date to 8% in the back half of the year. Can you just give us a little color on what this is reflecting? Is it a ramp of investments? Maybe help us understand some of the moving parts here and then a quick follow-up for Drew.

Two primary reasons there for some of that variability and operating margin between what we delivered in Q2 and what we guided to for Q3. I would say one, we drove more efficiency in the business in Q2, but we're preserving the flexibility to spend across Q3 and Q4. Two, it's due to the timing of spend, so things like marketing spend and hiring between quarters in the year. I would note that we are bumping up our operating margin outlook for the year and we certainly continue to be committed to driving year-over-year operating margin expansion on an annual basis.

Okay. Thanks, that's helpful. Drew, since there's been commentary on the international front, just wondering if you had any early insights from the adoption of GDPR and any impact on inbound interest or business in the European theaters. Thanks.

Actually, Dennis and I and the leadership team were out in Europe a couple months ago. I did a couple customer visits. I think GDPR does create urgency for IT administrators to get a good handle on where their data is and wrap their arms around it. They see Dropbox as a really powerful way to do that. It certainly puts the need for something like Dropbox higher in their minds and so we want to be there for our customers as they navigate GDPR.

Great. Thanks, guys.

Thank you. That concludes our question-and-answer session. I'd now like to turn the call back over to Drew Houston.

All right, everyone. Just one more thank you for joining us today and we really appreciate your support and look forward to speaking with you again next quarter.

This concludes our call. Thank you for joining us. You may now disconnect.