From MVP to Billions: The Product Leader's Dilemma

When Your Product Outgrows Its Original Playbook

As a product leader, you begin with a simple vision: solve a problem for early users. You build something functional, test it quickly, and iterate based on feedback. That's the classic startup formula — the MVP approach that has launched countless companies.

But what happens when your product isn't just solving problems for early adopters anymore — it's now serving billions of people around the world? What happens when each decision you make carries global implications?

"Getting people to try your first product is one challenge. Changing a product that billions of people already rely on is another. The ambition is still to move fast, test ideas, and build something better. But when every update carries consequences at a global scale, the instincts that helped you get started may need an update of their own."

This question is at the heart of a session we're particularly excited about at TechCrunch Disrupt 2026 — "From MVP to Billions of Users: How Product Decisions Must Change at Scale" — led by Robby Stein, vice president of product for Google Search.

A Product Leader Who Has Built on Both Sides of the Scale Divide

Robby Stein's journey is not just about working inside a technology giant. Before joining Google in 2024, he co-founded and led Stamped, a social recommendations startup acquired by Yahoo. He then spent five years at Instagram, where he played a key role in scaling products like Stories, Feed, Direct Messaging, and Reels.

This background gives him a unique perspective — one that combines the founder's drive with the experience of building widely used consumer products. His session at Disrupt is a valuable opportunity for founders and product leaders to hear from someone who has navigated both early-stage innovation and large-scale execution.

The Evolution of Product Decision-Making

As any product leader will tell you, the stakes change dramatically when you're not just building for your first 100 users — you're building for the world. Every update must be carefully considered. Every feature needs to be tested beyond what you'd normally do with an early prototype.

But that doesn't mean you stop iterating or experimenting. The key is learning how to maintain speed while building trust, innovation while ensuring reliability, and agility while scaling responsibility.

In fact, some of the most critical insights come from recognizing which instincts from the early days you should hold onto — and when it's time to let go of what worked in a small team and apply a more structured approach to a global platform.

AI Makes the Challenge Even More Immediate

Robby Stein now works on generative AI products and experiences within Google Search, placing him at the intersection of introducing new technology and evolving how people find information. That position gives him a timely vantage point to explore this question.

The scale is immense — in May, Google reported that AI Mode had surpassed 1 billion monthly users, a year after its debut. Earlier this year, Stein also outlined updates that let people move from an AI Overview into a follow-up conversation in AI Mode, describing a search experience designed to accommodate both quick answers and deeper exploration.

These developments underscore how critical it is for product teams to consider not just what their technology can do — but how users will actually experience it. The challenge isn't just about engineering capability; it's about user experience at scale.

The Real Value of the Session

For those attending TechCrunch Disrupt 2026, Stein's session is not about copying Google's internal processes. It's about understanding the thought process behind them — where speed creates an advantage, where greater care becomes essential, and how to recognize when the way you build needs to evolve alongside your product.

Whether you're refining your first product, expanding a growing platform, or rethinking an established experience, these lessons are invaluable. And for those working in AI, it's particularly relevant — because as we continue building intelligent systems, the balance between innovation and reliability becomes even more delicate.

Why This Matters for All Product Leaders

Stein's session is one of many at Disrupt 2026 that dives into real-world challenges faced by leaders in a rapidly changing landscape. It's a chance to learn from someone who has worked on both ends of the spectrum — from building a startup to managing a product that billions depend on daily.

That blend of experience and perspective is rare, and it offers insights that transcend industry boundaries. Whether you're a founder with a promising idea or a seasoned executive managing enterprise-scale software, this conversation can help inform how you think about product decisions as your company scales.

The session promises to be one of the most compelling discussions on product leadership at TechCrunch Disrupt 2026. Don't miss it — and make sure to register now before prices rise on September 25th.

Learn How to Build for the Users You Haven't Reached Yet, Only at Disrupt 2026

Your product is evolving — but are you evolving your approach to building it?

This is more than just a question of scale. It's about maintaining the core values and vision that made your product compelling in the first place, while adapting to meet the needs of a global audience.

We're excited to see how Robby Stein will frame this challenge during his session. And we encourage you to join us at TechCrunch Disrupt 2026 — whether it's through attending live or connecting with others online — to learn from industry leaders who are shaping the future of product development.

Make sure your team is prepared for the next stage of growth. Register now and save up to $200 before prices increase on September 25th.