Thank you, Tom. As Tom outlined, Akamai delivered another excellent quarter in Q3. We were very pleased to exceed the high end of our guidance range on revenue, operating margin and earnings. Q3 revenue was $710 million, up 6% year-over-year or 7% in constant currency, driven by strong security growth and higher than expected video and software traffic. In addition, we didn't see the traditional slowdown in traffic during the summer months as we have seen in the past. Revenue from our web division was $390 million, up 9% year-over-year or 10% in constant currency. Revenue growth for this group of customers continued to be driven by our security business, where we saw strong performance across multiple security products in several key verticals, including financial services, commerce and high-tech. Revenue from our media and carrier division was $320 million, up 2% year-over-year or 3% in constant currency. The better than expected growth in Q3 came from continued momentum in security and higher than expected OTT video and software traffic as we gain share in several key customers during the quarter. Revenue from the internet platform customers was $44 million, up 2% from the prior year. Security revenue for the third quarter was $216 million, up 28% year-over-year or 29% in constant currency. Sales in our international markets now represent 42% of total revenue in Q3, up four points from Q3, 2018 and up one point from Q2 levels. International revenue was $297 million, up 15% year-over-year or 18% in constant currency. As Tom outlined earlier, we entered into an agreement in Q3 to acquire Exceda as part of our overall plan to grow our market presence throughout Latin America. We are pleased with the traction we've seen from prior go-to-market investments overseas and expect the Exceda acquisition once closed will help spur revenue growth internationally. Foreign exchange fluctuations had a negative impact of $2 million on a sequential basis and negative $6 million on a year-over-year basis. Finally, revenue from our US market was $413 million relatively flat year-over-year. Moving now to costs. Cash gross margin was 78% roughly flat with Q2 two levels and up one point from the same period last year, primarily due to the continued execution of our platform efficiency initiatives. GAAP gross margin which includes both depreciation and stock based compensation was 65%, down one point from Q2 levels. Non-GAAP cash operating expenses were $250 million, down $4 million from Q2 levels and favorable to our guidance due to our continued focus on operational efficiencies, savings generated through our enhanced procurement function and the timing of approximately $2 million of costs related to our new headquarters shifting from Q3 to Q4. Now moving on to profitability, adjusted EBITDA was $301 million, up $8 million from Q2 levels and up $27 million or 10% from the same period in 2018. Our adjusted EBITDA margin was 42% consistent with Q2, up one point from Q3, 2018 and above the high end of our guidance range. Non-GAAP operating income was $208 million, up $4 million from Q2 levels and up $27 million or 15% from the same period last year. Non-GAAP operating margin came in at 29%, consistent with Q2 levels, up two points from Q3 of last year and above our guidance range. Capital expenditures in Q3 excluding equity compensation and capitalized interest expense were $154 million. This was below our guidance range due to lower than expected spend on our new headquarters, as well as some costs related to network build-out that shifted into Q4. Before I move on to earnings, one quick housekeeping item. During Q3, we started to recognize our share of earnings from our previously announced blockchain joint venture with Mitsubishi. Our share of the JV's earnings is a loss of $1.4 million in Q3. It is reflected in our GAAP net income, but it is excluded from our non-GAAP results. GAAP net income for the third quarter was $138 million or $0.84 of earnings per diluted shares. Non-GAAP net income was $181 million or $1.10 of earnings per diluted share, up 17% year, up 18% in constant currency and $0.08 above the high end of our guidance range. Taxes included in our non-GAAP earnings were $34 million based on a Q3 effective tax rate of 16%. This rate is approximately one point lower than our guidance due to higher percentage of foreign earnings. Now we'll discuss some balance sheet items. We continue to have a very strong balance sheet. As a September 30th, our cash, cash equivalents, marketable securities totaled $2.3 billion, up about $ billion from the end of Q2. This increase was due to $1.15 billion convertible debt offering we closed in August. This brought our total debt at the end of Q3 to $2.3 billion. Now I'll review our use of capital. During the third quarter, we spent $176 million to repurchase shares, buying back approximately two million shares. We added Q3 with approximately $800 million remaining on our previously announced share repurchase authorization. As Tom mentioned earlier, we plan to remain active and discipline in pursuing additional M&A. In our most recent debt offering, further strengthens our balance sheet for additional strategic flexibility. We believe our discipline and balanced capital allocation approach will allow us to continue to drive shareholder value through investing organically in the business, pursuing M&A and continued share repurchases. In summary, we're very pleased with our Q3 results and remain confident in our ability to execute on our plans for the long term. I'd now like to provide Q4 guidance and an update to our 2019 guidance. As always, seasonality plays a large role in determining our financial performance for the fourth quarter, driven by seasonal online retail activity for our e-commerce customers, higher than normal traffic for our large media customers, and a higher proportion of carrier software license deals that tend to be signed in the fourth quarter. And finally, this year we'll see the launch of two highly publicized OTT offerings in Q4. All these factors make the fourth quarter the hardest to predict. We also expect the potential for further foreign currency exchange headwinds in Q4 from the continued strengthening of the US in a potential for additional currency volatility associated with Brexit. At the current spot rates, however, foreign exchange fluctuations are expected to have limited impact on Q4 compared to Q3 levels. But will have a negative impact of $2 million year-over-year. Taking all these factors into account, we are projecting Q4 revenue in the range of $735 million to $755 million, or up 3% to 6% in constant currency over Q4, 2018. To frame this guidance, if the online holiday season and media traffic demand including the OTT launches is exceptionally strong, we would expect to be near the higher end of the revenue range. If the online holiday season and media traffic demand is not as strong then we would expect to be towards the lower end of the range. At these revenue levels, we expect cash gross margins of 78%. Q4 non-GAAP operating expenses are projected to be $274 million to $278 million. The increase in costs over Q3 levels is due to higher sales incentive compensation costs that we typically see in Q4, two months of operating costs associated with the Exceda acquisition, additional marketing expenses related to our Europe and Asia customer conferences. And increase rent associated with the new headquarters building. Factoring in the cash gross margin and operating expense expectations I just provided, we anticipate Q4 EBITDA margins in the range of 41% to 42%. Now moving to depreciation, we expect non-GAAP depreciation expense to be between $94 million to $96 million. Factoring in this guidance, we expect non-GAAP operating margin of approximately 28% to 29% for Q4. Moving on to CapEx, we expect to spend approximately $153 million to $165 million, excluding equity compensation in the fourth quarter. This includes approximately $22 million related to our new headquarters, as well as continued network investments in anticipation of increased OTT traffic in 2020. And with the overall revenue and spend configuration I just outlined, we expect Q4 non-GAAP EPS in the range of $1.10 to $1.15 or 4% to 10% in constant currency. This EPS guidance assumes taxes of $35 million to $37 million based on an estimated quarterly non-GAAP tax rate of approximately 16%. And it also reflects a fully diluted share count of approximately 164 million shares. Looking into the full year, we are raising both our revenue and EPS guidance. On the revenue side, we expect a range of $2.857 billion to $2.877 billion, which is an increase of approximately $12 million at the midpoint of the range compared to our previous guidance. To the full year, we anticipate adjusted EBITDA margins of 42%. We expect 2019 non-GAAP operating margins of approximately 29%. We expect full year CapEx to be 21% of revenue and included in our 2019 CapEx spend is roughly $100 million of one time costs related to the moving into our new headquarters. Moving to EPS. We are increasing our non-GAAP earnings per diluted share range to $4.36 to $4.42 for full year 2019 which is up $0.11 at the midpoint compared to our previous guidance. Our guidance assumes non-GAAP effective tax rate of 16%, a fully diluted share count of approximately 165 million shares. In summary, we are very, very pleased with our business performance, as well as our ability to again increase our guidance for the full year. Thank You. Tom and I would be happy to take your questions. Operator?