Thanks, Sacha. Hello, everyone. So our focus in Q1 was to drive the usage in a selective and thoughtful manner with a robust level of marketing efficiency. And that was and is made possible by the strength of the Jumia brand in the countries where we operate. And we had a very good illustration of the Jumia brand strength with the result of the 2020 most influential brand survey in Egypt that was released by IPSOS in March this year. The survey is a global initiative. Was conducted in Egypt for the first time in 2020. And it assessed the brand's impact on Egyptian consumers based on multiple dimensions, such as trustworthiness, leadership presence, leading edge. Jumia ranked 7th among 120 national and international brands in Egypt and ranked number one in the digital and e-commerce category in Egypt. This high level of recognition by the consumer is a key enabler of our marketing efficiency, while our annual sales and advertising per annual active consumer declined by 46%, annual active consumers reached 6.9 million, up 7% year-over-year as we continue to acquire new consumers and engage existing ones. In the context of a decrease in the sales and advertising expense per order of 12%, total orders for the quarter reached EUR 6.6 million, up 3% year-over-year. This is a reversal of the declining trend observed over the prior 2 quarters. The fastest-growing categories in terms of volumes continue to be everyday product category, such as beauty, food delivery, fashion, while we continue to see volume declines in electronics albeit with a modest recovery observed in the phone category. As we reduced our sales and advertising spend by 9% year-over-year, GMV was down 13%, reaching EUR 165 million in Q1. It's also worth noting that the FX impact this quarter was material with the Nigerian naira, the Egyptian pound and the Kenyan shilling declining 15%, 9% and 19%, respectively, against the euro in Q1 2021 compared to Q1 2020. So on a constant-currency basis, GMV was down 5% year-over-year, while sales and advertising expense was EUR 8.8 million, down 1% year-over-year. Our GMV mix continues to shift towards lower ticket size everyday product categories, which are affordable entry points into the Jumia ecosystem, while ultimately supporting repurchase dynamics. So on Page 9, you can see that phones and electronics accounted for 30% -- 37%, sorry, of GMV in Q1 2021 compared to 45% of GMV in Q1 2020. In parallel, average order value decreased by 16% from EUR 29.5 in Q1 2020 to EUR 24.9 in Q1 2021, reflecting the shift towards those everyday categories. While smaller in average value, our orders are also more profitable as gross profit after fulfillment expense per order more than doubled from EUR 0.40 in Q1 last year to EUR 0.90 in Q1 this year. In the context of this increased focus on every day and high-frequency categories, I'd like to give you more color on our food delivery and on-demand business. This is a strategic component of our ecosystem that has performed quite strongly over the past few years and where we see significant potential for future growth. On Page 10, you see -- you can see that we have been operating this business since the inception of Jumia in 2012. And this is now a leading Pan-African platform covering 10 countries and 48 cities. It is very much an urban model where we target cities with high density of population and restaurant supply. For the 12 months period ending in March 31, we had over 5,700 restaurants and other convenience outlets active on our platform. We have long-standing relationships with blue chips QSR franchisees such as McDonald's, KFC, Burger King, Pizza Hut, Subway alongside local restaurant concepts as well as convenience outlets such as grocery shops and others. It's a meaningful part of our business and accounted for 22% of orders and 9% of the GMV in Q1 2021, and its share in the business has been growing over time, which speaks to the relevance of the food delivery for our consumers. On Page 11, you can see that we built Jumia as a comprehensive ecosystem of physical goods and digital services with multiple entry points for our consumers. With an average order value of around EUR 10, food delivery and on-demand service has historically been an entry point for the more affluent consumer base that we seek to retain and reengage across the other parts of our ecosystem. We have observed that as we continue to expand our restaurant offering as well as the price point of this offering, we are now able to attract a more diverse consumer base. Our food delivery and on-demand services have been growing very strongly over the past 3 years. Monthly orders on the platform have increased by a factor of more than 4 between January 2018 and March 2021, which demonstrates the relevance of this offering for our consumers. You can also see on the chart the effect of the start of the pandemic in Africa with a strong dip in orders around April, May last year. However, the business has been quite resilient despite significant disruption from the curfews with orders rebounding above pre-pandemic levels starting from June last year. Overall, the food delivery and on-demand service are an important growth engine for the platform, and the key assets in terms of consumer acquisition and reengagement. It's also a key component of our program, Jumia Prime, that we have been testing over the past few quarters. Jumia Prime is a loyalty program as part of which consumers can set up a monthly subscription to get free delivery and access to a number of other benefits within the Jumia ecosystem and from third-party partners. It's a great value proposition for consumers to have within the same program, both the food delivery as well as the e-commerce. It is also a strong differentiator versus competition. The last aspect in relation to food delivery that I'd like to spend some time on, Page 12, is a dedicated logistics infrastructure that we have built for this business and that has meaningful synergy potential with the rest of the platform. On Page 12, you can see we operate a delivery-enabled marketplace model where 90%-plus of the orders placed are fulfilled through the Jumia on-demand logistics infrastructure. Similar to our physical goods logistics, we operate an asset-light model for on-demand delivery, leveraging the fleet and the drivers of around 140 third-party logistic partners. We have a dedicated tech stack that supports all on-demand logistics workflows, including restaurants and point-of-sales module, smart order assignment and delivery associates scheduling, customer interface, et cetera. This strong tech backbone, alongside tried and tested logistics processes and infrastructure allow us to continuously reduce our average delivery time, which stood at 40.5 minutes in Q1. This is a remarkable achievement when you keep in mind the traffic and the road conditions of the larger frequent cities where we operate. And we intend to further decrease delivery time as we continuously improve our machine learning algorithm to better manage each step of the delivery experience. As part of this focus on continuously improving customer experience, we see increased convergence of e-commerce and on-demand delivery. The on-demand logistics infrastructure we beat is a tremendous asset to develop a few commerce proposition and offer consumers on-demand delivery for a broader range of FMCG and everyday items. We are already working with large retail chains as well as smaller outlets to offer grocery and fresh product delivery, and we believe this is an also another very exciting area for future growth. We are very excited by the momentum we are seeing in our food delivery business as well as its future growth prospects. I now would like to move on another strategic area of our business, JumiaPay on Page 14. The TPV increased by 21% from EUR 35.5 million in Q1 last year to EUR 42.9 million in Q1 this year. On a constant-currency basis, TPV in Q1 this year was up 35% year-over-year. JumiaPay penetration as a percentage of GMV increased from 18.7% last year to 26% this year. On the next page, JumiaPay transactions increased by 7% from 2.3 million in Q1 last year to 2.4 million in Q1 this year. JumiaPay transactions above EUR 10, which include prepaid purchase on the Jumia physical good marketplace and Jumia food platforms, increased by 30%. JumiaPay transactions below EUR 10, which mostly consists of transactions on JumiaPay app, declined by 3%. This trend was concentrated in the airtime recharge category as we reduced consumer incentives within this category, which has historically been promotionally intensive. Overall, 36.7% of order placed on the Jumia platform in Q1 this year were completed using JumiaPay compared to 35.5% last year. Beyond the payment processing activities that we capture in the TPV and transactions, JumiaPay also functioned as a financial service marketplace for both consumers and sellers. For sellers and SME sellers in particular who have historically been underserved by financial institutions, JumiaPay leveraged their business data for credit scoring purpose and connect them to financial institution who offer them short-term loans and working capital financing. In Q1, this year, 380 loans were disbursed as part of this activity, 90% more than Q1 last year. These loans were allocated to 291 unique sellers, 62% more than in Q1 last year. It is synergistic with our marketplace activities as it helps fund the inventory needs of our sellers, but is also very much in line with our mission of leveraging technology to empower SMEs and help them grow their business. I now hand over to Antoine, who will walk you through our financial performance into more detail.