Madhuri Racherla, VP of Infrastructure and SRE at Pinterest, shared the company's journey to optimize performance and reduce costs at the AWS ReInvent 2024 conference. Pinterest's mission is to inspire over 553 million monthly active users to create lives they love, and its platform is a hub for ideas and creativity. The company's infrastructure is built on tens of thousands of EC2 instances and stores about an exabyte in Amazon S3, ensuring user content is secure and accessible. To keep pace with growth, Pinterest has refined its infrastructure strategies for flexibility, reliability, and cost-effectiveness. The company has adopted AMD M7a instances with EPYC Genoa CPUs, which have improved compute-bound microservices performance and yielded significant cost savings of up to 40%. The transition to M7a instances demonstrates Pinterest's commitment to infrastructure innovation and scalability. Madhuri detailed the strategic steps taken to migrate, including workload analysis, instance selection, and comprehensive testing, which was completed swiftly with no impact on service level objectives. Pinterest's enhancements highlight its dedication to boosting performance and cost-efficiency, aligning infrastructure with current and future needs. Madhuri's presentation was a call to action, inspiring engineers to push boundaries and make strategic choices that set the stage for future successes. By making thoughtful decisions today, Pinterest lays the groundwork for greater possibilities tomorrow.