Thanks, John. Hi, everyone. We appreciate you joining today's call as we begin on Slide 4. I'm proud to report that team CSG delivered a fantastic Q1 across all key financial metrics. We posted 13% year-over-year revenue growth, all organic, our best quarterly organic revenue growth performance in nearly two decades. We improved profitability in Q1 with 19.3% non-GAAP adjusted operating margin and 24.3% non-GAAP adjusted EBITDA margin, both of which represent our best quarterly performances since 2016. And we grew bottom line non-GAAP EPS faster than revenue with 20.9% year-over-year growth, delivering on our commitment to expand CSG's operating leverage as we gain scale. Team CSG is committed to growing revenue faster, expanding operating leverage more and delivering record-setting results quarter-in, quarter-out. And as we do this, we never lose sight of our biggest competitive advantage, a fantastic culture and talented dedicated people who work so hard every day to bring greater value to the growing number of fantastic brands we serve in many big, exciting and faster-growing industry verticals. During Q1, we had several exciting customer wins and success stories. I'm pleased to report that 100% of the Charter subscriber migrations off of a competitor's billing system are now fully complete. We also expanded our relationship with one of the top CSPs in Saudi Arabia, and we surpassed 100,000 active merchants on our payment platform for the first time. I'll provide more color on these and other wins shortly. At the end of the day, our success in growing revenue faster is fueled by our exciting ongoing market demands for CSG's industry-leading SaaS products and our impressive sales results. We continue to win and wow big new customers in a wide variety of faster growth industry verticals. Our sales pipeline continues to be healthy and strong. Another important topic I want to touch on is our dedication to caring deeply about doing good. At CSG, we believe that good people and high-integrity companies can and should finish first. A month ago, we issued our inaugural Impact Report, which showcases our initiatives around ESG, diversity, inclusion and global community impact. Over the past year, we've made huge strides in our ESG and DEI practices, having released our first Sustainability Accounting Standards Board report last year and our first Taskforce on Climate-Related Financial Disclosures report earlier this year, and our increased disclosure is moving the needle from an ESG rating agency perspective. In April, we received our second consecutive Prime rating from ISS, which means that CSG is in the top 20% of its software peers when it comes to quality ESG disclosures. Additionally, we received a AA rating from MSCI, a step-up from the BBB rating received two years ago. We look forward to sharing our continued progress in the quarters and years ahead on this important journey. Turning to Slide 5. I want to reiterate the four strategic objectives that will help CSG create more shareholder value and allow followers of our story to track our progress. CSG aspires to deliver long-term organic revenue growth in the 2% to 6% range, striving to consistently be at or above the midpoint of this range, combined with highly disciplined, accretive and strategic inorganic growth. As a reminder, the midpoint of our 2023 full-year revenue guidance represents fiscal year 2023 revenue in the 5.5% range, all organic. We aimed at operating scale and expand our operating leverage by growing revenues to $1.5 billion in revenue by year-end 2025 with bottom line growing as fast or faster than topline revenue growth. We strive to be the number one SaaS provider of choice for global communication service providers by providing the most value-adding technology platforms and by being easier to do business with than our competitors. And finally, we plan to diversify revenue even more as we win big in faster growth industry verticals like retail, government, financial services, health care, technology and more. Moving to Slide 6, you can see that we delivered against all four objectives with an excellent Q1 start to 2023. On the strategic revenue growth side, we reported $299 million of revenue during Q1 2023, resulting in 13% year-over-year revenue growth. On the right-hand side of Slide 6, we believe that CSG's high recurring revenue SaaS business model and our strong healthy balance sheet make us an attractive harbor in the midst of macroeconomic uncertainty. By 2025, we aspire to gain scale in the markets where we compete and generate $1.5 billion in annual revenue, which implies that CSG will have added over $500 million in profitable recurring revenue from 2020 to 2025. Over the medium to long-term, we aspire to expand CSG's operating leverage and use our strong balance sheet to deliver non-GAAP EPS growth that meets or exceeds revenue growth. On this last point, I will continue to reinforce a key principle for the CSG Board of Directors and our management team. Investors can be assured that team CSG is laser-focused on creating shareholder value and growing profitable revenue, not building empires nor adding empty revenue calories. We will maintain a disciplined and high return on invested capital mindset as we explore a wide range of strategic moves to create more value. Turning to Slide 7. We had good success in Q1 and our goal to be the number one technology provider of choice for communication service providers globally and our continued success with both North American and global CSPs, proved that we are executing well against this strategic priority. It is great to see that CSG grew revenue 10% year-over-year, combined at our two largest North American cable broadband customers in Q1. This result was partially driven by the migration of subscribers at Charter from a competitor's billing system over the last 12 months, but we also saw good growth coming from other drivers, and we continue to win more business in the global telecom market. At the beginning of the year, we expanded our engagement with one of the top telecom operators in Saudi Arabia, specifically team CSG was trusted to consolidate fragmented legacy BSS platforms into a modern unified platform. Our solution will reduce this customer's BSS complexity, improve time to market with new product offerings and enhance the efficiency of their business operations. During the quarter, we also expanded our relationship with a leading telecom operator in Latin America and the Caribbean. Specifically, we are now helping this business with its digital customer engagement needs. Our solution will help this customer reduce cost and standardize their digital experience across the dozens of countries in which they operate. Turning to Slide 8. Since 2017, CSG has diversified our revenue coming from exciting new industry verticals from 7% of total 2017 CSG revenue to 26% in 2022. And while this metric can fluctuate from quarter-to-quarter, 28% of our Q1 2023 revenue came from these exciting new industry verticals. Being a partner of choice for big brands and higher growth industry verticals where we help them digitize and modernize their customer experience and integrated payments continues to be a game changer for CSG and our customers. Last fall, we launched CSG Xponent Ignite, which brings over 100 pre-packaged customer experience journey templates, connectors and reports that will turbocharge unforgettable outcomes for communication service providers, financial services, retail, health care and life sciences. This leading SaaS platform leads to quantifiably better business results with improved customer conversion, engagement and loyalty across the brand's digital channels. What does this mean for brands in a wide range of industry verticals? Lower entry price points, rapid launch in 90 days or less, turning customer data into powerful insights and faster return on investment. During Q1, we landed a nice contract expansion with Safe Harbor Marinas, which is the largest marina management company in the United States. Specifically, team CSG is supporting Safe Harbor Marinas with their digital operations, including new go-to-market offerings. This is another example of how our digital customer experience suite of products is finding use cases across multiple industry verticals. Also in Q1, we expanded our relationship with a leading U.S. company that builds human understanding through personalized health care solutions to transform their customer interactions. The CSG solution will simplify their architecture, consolidate their voice and SMS interactions and enable better patient engagement across multiple channels. In the payments market, our continued growth is a testament to our industry-leading SaaS integrated payments platform. During Q1, our payments business delivered excellent topline growth with strong double-digit year-over-year revenue growth. We now provide award-winning payment solutions to approximately 102,000 active merchants and ISV partners who need ACH, credit card, payment gateway and payment processing capabilities, serving a wide range of recurring revenue industry verticals. As a leader in ACH processing, we continue to add scale by signing ISV partners in fast-growing industry verticals like property management. In both full-year 2022 and Q1 2023, we posted excellent results in our payments business. And looking ahead, we anticipate even better growth. We believe our strong double-digit organic revenue growth will continue and possibly even accelerate into 2023 and beyond. As importantly, we are working hard to significantly improve our already good profitability in our payments business, and we like the results we achieved in Q1 in this regard. To wrap up on Slide 9, I hope you see why team CSG is so excited. CSG is growing faster, diversifying revenue more, expanding profitability and elevating every aspect of our business. Our Q1 results were by far the best we delivered in several decades and gives us a strong start to 2023. We continue to attract, retain and develop the best and most diverse talent in the industry, all while trying to make the world more sustainable and inclusive via our ESG and DEI initiatives. We continue to transform the industries we serve in telecom, cable, media, financial services, health care, retail, government and more, and we continue to turn our healthy expanding sales pipeline into a steady stream of exciting sales wins all around the world that continue to fuel faster revenue growth. And yet as good as all this is, we know the team CSG isn't even close to reaching our fullest potential. With that, I'll turn it over to Hai to provide more detail on Q1 and revisit our 2023 guidance targets.