At Sinch, we’ve learned that building a unified platform is harder than it looks — and we’ve discovered at least 100 ways not to do it. From fragmented systems to failed unification attempts, our journey has been full of lessons. This talk shares the most valuable ones: how to balance legacy with innovation, why executive alignment matters, and how small improvements in developer experience can pave the way for lasting change. Attendees will leave with a candid, optimistic perspective on avoiding common pitfalls when evolving platforms at scale.