Thanks Bill and good afternoon everyone. Today I'll be discussing our first quarter 2024 financial results and provide an update on our preliminary second quarter 2024 outlook. All financial metrics, except for revenue, will be discussed in non-GAAP terms unless otherwise specified, and all comparisons will be discussed on a year-over-year basis unless otherwise noted. Our team has made tremendous progress across users, monetization, and profitability over the past few quarters. This quarter is a testament to how focused execution and alignment across our strategic priorities can drive strong gains for the business. Like Bill said, we found our best product market fit in years. Users and advertisers alike are taking notice, leading to our highest MAU count ever in our fastest revenue growth quarter since 2021. User growth is accelerating as we are investing in areas that are unique to Pinterest, such as human curation at scale that allows our AI to generate highly relevant personalization and recommendations across multi-session commercial journeys and significant improvements in actionability. We also see our investments in positivity and inclusion resonating deeply with our users. Additionally, our lower funnel tools and formats including mobile deep linking, API for conversions and clean rooms, as well as direct links are driving meaningful and sustained ROI improvement for advertisers, which are reflected in our continuing revenue acceleration. These efforts have been complemented by our introduction of third-party demand onto the platform, which has added density to our auction and allowed us to serve more relevant and engaging ads to our users. Now let's dive into our first quarter results. We ended the quarter with 518 million global monthly active users, growing 12% and reaching another record high. We accelerated user growth year-over-year across all our geographic regions. In the U.S. and Canada, we had 98 million MAUs, growing 3%, up from 2% last quarter, adding 1 million sequential users for the third quarter in a row. In Europe, we had 140 million MAUs, growing 10%, up from 8% last quarter. In our rest of world markets, we had 279 million MAUs, growing 16%, up from 15% last quarter. Now to revenue. In Q1, our global revenue was $740 million, up 23% or 22% on a constant currency basis. The revenue strength this quarter, which exceeded the high end of our guidance range, highlights how we are driving value for advertisers across the full funnel. Our lowest funnel conversion objective was our fastest growing, with particular strength coming from our shopping ads format as advertisers turned to Pinterest to drive sales. We know that we are creating value for our advertisers, and we're seeing signs of value capture from our largest, most sophisticated advertisers that have been able to see sustained performance gains in their own measurement sources of truth and shifted more budget to us as a result. However, we finished our GA rollout of direct links in March, and we expect more value capture to still be in front of us, similar to the historical lag we've seen between value creation and value capture from other lower funnel products we've launched, such as mobile deep linking, API for conversions, and our shopping ads format. From a vertical perspective, we saw broad strength in retail. Within retail, we saw our larger, more sophisticated advertisers continue to lean into the platform as they have adopted our lower funnel tools and are seeing continued success. We also saw a nice growth in our emerging categories, including financial services and technology. Next, as expected, our third-party demand partnerships began to scale in Q1 and were an emerging contributor to our growth. Finally, we estimate that leap day in February and the Easter shift into March this year contributed approximately two points of growth to Q1. Turning to our geographical breakouts, in the U.S. and Canada, we generated $592 million in revenue, growing 22%. Strength came from retailers and emerging categories, including technology and financial services. In Europe, revenue was $118 million, growing 27% on a reported basis or 25% on a constant currency basis. Strength in Europe came from retail and CPG categories. Revenue from the rest of the world was $30 million, growing 25% on a reported basis or 26% on a constant currency basis. In Q1, ad impressions, which is composed of ad load and total impressions, including both organic and paid impressions, grew 38%. This was driven both by increases in total impressions as well as increases in ad load. We've been able to flex up our ad load through whole-page optimization to provide relevant ads to users in moments of high commercial intent, and we see continued room to steadily progress this as we further improve the actionability of our users' commercial journeys and relevance of ads. Meanwhile, ad pricing declined 11%, an improvement from down 16% last quarter, largely as a result of accelerating ad demand. But still, a year-over-year decline as we continue to drive increased value to advertisers in the form of more clicks and greater efficiency. Moving to expenses. For the past few quarters, we've been able to drive continued margin expansion through effective expense discipline while allocating resources towards our highest ROI initiatives. Cost of revenue in Q1 was $177 million, up 6% year-over-year and up 2% versus Q4. Due to increased infrastructure spend related to users and engagement growth, partially offset by our continued work to drive cost optimizations on our infrastructure spend. Our non-GAAP operating expense was $453 million, up 10%. The increase was primarily driven by higher headcount-related expenses across R&D and sales and marketing, as well as incremental marketing spend. Our revenue outperformance and expense discipline led to another strong quarter of adjusted EBITDA and margin expansion, coming in at $113 million with an adjusted EBITDA margin of 15%. This was up approximately 1,100 basis points versus last year. Finally, we ended the quarter with cash, cash equivalents, and marketable securities of $2.8 billion. We utilized approximately $100 million of cash in the quarter on net share settlement of equity awards. As a reminder, this process mitigates dilution by holding back shares to cover the taxes on employees' vested RSUs, where the company pays for the taxes from our own cash reserve on behalf of the employees. This process, combined with last year's share repurchase, has led to an approximately 1.6% decline in year-over-year fully diluted share count relative to the positive 2% to 3% average annual dilution target that we outlined at our investor day. Now we'll discuss our preliminary guidance for the second quarter. We expect Q2 2024 revenue to be in the range of $835 million to $850 million, representing 18% to 20% growth year-over-year. This guidance represents a continuation of the strong growth we saw in Q1, driven by many of the same initiatives I just outlined, including direct links value capture and the emerging contribution from third-party demand partnerships. This guidance range is roughly consistent with the revenue growth that we've seen in Q1, when adjusting for the two points of year-over-year growth benefit in Q1 from the Easter timing shift and leap day, and an additional one-point benefit in Q1 from foreign exchange, which we're not expecting to continue into Q2 based on current spot rates. Turning to our expense guidance, we expect Q2 non-GAAP operating expenses of $490 million to $505 million, growing 11% to 15% year-over-year. Our operating expense guidance does not include cost of revenue. However, we plan to continue our infrastructure optimization efforts, and therefore we anticipate non-GAAP cost of revenue expense to be relatively consistent with Q1. The increase in non-GAAP operating expense year-over-year is driven by investment increases in R&D, where we are investing in headcount for AI talent across our business. As we have said previously, we are anticipating year-over-year margin expansion again in 2024, but at a more modest level than the 660 basis point expansion we delivered in 2023, as we balance investing in growth and flowing profitability through to the bottom line. We expect margin expansion in both halves of 2024. However, we expect significantly more margin expansion to occur in the first half versus a more modest level in the second half, as we lap the strengthening adjusted EBITDA margins we drove in the second half of 2023. All-in-all, I'm pleased with the strong progress we've made against our strategic priorities. There's strong momentum in our business, and we're successfully executing against our plan. Now I hand it over to Bill for some final words.