He built a product from $0 to $1B+ at Google.Now he’s building the integration layer for the AI-first future of SaaS. In this episode of Founders & Builders, I sit down with Romain Sestier, CEO and co-founder of StackOne — the next-gen platform unlocking 3,000+ actions across 200+ SaaS tools for AI agents and enterprise software. We dive into:🧠 Why integrations are now table stakes for SaaS success⚙️ How StackOne is reinventing how AI agents interact with real enterprise tools💥 The biggest problems with today's APIs — and how AI changes everything💡 What Romain learned from scaling billion-dollar SaaS inside Google and Oracle📈 How StackOne raised $20M from GV (Google Ventures), Workday Ventures, XTX, and angels from OpenAI and DeepMindWhether you're building in SaaS, AI infra, or developer tools — this conversation is packed with insight into where software is heading next.

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