Startups

What Y-Combinator Actually Taught Me

2026-02-15 · 9 min


Talk to Users (No, Actually Talk to Them)

The single most repeated piece of advice at YC is "talk to your users." It sounds obvious. But when I went through W17 with Apozy, I realized how few founders actually do it. We'd been building browser security features based on what we thought enterprises needed. Three weeks of customer conversations completely changed our roadmap.

The conversations revealed that IT admins didn't care about the technical sophistication of our sandbox. They cared about deployment simplicity and the ability to prove to their CISO that browsing threats were being handled. We'd been selling technology when we should have been selling peace of mind.

Do Things That Don't Scale

Paul Graham's essay on this became our operating manual. Early on, we manually onboarded every enterprise customer. I personally configured browser extensions, ran security audits, and sat in on IT team meetings. It was exhausting and completely unscalable. It was also the only way to understand what our customers actually needed.

The insights from those manual onboardings shaped our self-service product for years. Features we never would have thought of from behind a desk became our most compelling selling points because we'd watched real users struggle with real problems.

Speed Is a Feature

At YC, the expectation is that you ship something every week. Not plan something, not discuss something, ship something. This cadence forces you to make decisions fast, cut scope aggressively, and learn from real usage instead of hypothetical planning sessions.

We shipped our first enterprise deployment in 6 weeks. It wasn't perfect. But the customer feedback from a real deployment was worth more than six months of planning. The speed forced us to be honest about what mattered and what was vanity.

The Network Effect

The YC network is the real product. Having access to 4,000+ founders who've been through the same crucible is invaluable. When Apozy needed introductions to CISOs at large companies, the YC network delivered. When we were negotiating our first enterprise contract, a YC alum walked us through their playbook.

The network also kept us honest. When you're surrounded by founders who are shipping weekly and growing fast, you can't hide behind planning and strategy documents. The peer pressure to execute is real and productive.

What Still Applies

Every startup I build or advise today uses the same principles. Validate before building. Talk to customers constantly. Ship fast and iterate based on data. Do things manually before automating. The tools and technologies change every year, but these fundamentals are permanent. They worked in 2017 at YC and they work in 2026 with AI-assisted development.

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