Learn from Comparethemarket's journey in building a strategic platform solution, transitioning from a 5-year self-managed Kubernetes environment. Explore how they tackled legacy design challenges, introduced new capabilities, and executed a smooth migration strategy. Gain insights on initiating large-scale projects like platform development, identifying crucial considerations, and simplifying the migration process for seamless project transitions. Delve into topics such as obtaining proper buy-in, prioritization, delivery strategies, migration planning, treating platforms as products, and platform evolution. Discover the keys to building a successful platform, scalability considerations, benefits for internal customers, and self-service provisioning options. Examine the decision-making process behind platform technology choices, data persistence strategies, and future challenges in this comprehensive 44-minute talk from Platform Engineering.