Lessons from Leading the Serverless First Journey at CapitalOne

Going serverless? Worried about challenges with performance, cost, and scale? At CapitalOne, we embraced a serverless first mentality across thousands of applications live today. This talk covers our journey into serverless, the best practices we picked up, and the lessons learned along the way. We dive into expert optimizations for Lambda, including why you shouldn't confuse provisioned concurrency with reserved concurrency, how to make the most out of the un-throttled CPU during "cold start" initialization, picking CPU architectures, and real-world results from SnapStart.

What's the focus of your work these days?

I lead our serverless center of excellence. I'm responsible for driving enterprise standards and well managed adoption of serverless technologies across Capital One. I work with our engineers all over the enterprise to help transition our compute stack to serverless.

What's the motivation for your talk at QCon San Francisco 2023?

Capital One operates one of the largest serverless deployments in the world. We have a lot of experience and would love to share with other serverless engineers around the world.

How would you describe your main persona and target audience for this session?

This talk is intended for Cloud Architects, Engineers, and Developers. The content will be intermediate level and technical in nature. Folks should have prior AWS (or cloud) knowledge.

Is there anything specific that you'd like people to walk away with after watching your session?

Attendees will learn how to implement Lambda and serverless technologies at scale. I'll cover some things we learned by operating one of the largest serverless deployments in the world. Attendees will learn how to transition their tech stack to serverless.


George Mao

Senior Distinguished Engineer @Capital One Leading All Things Serverless, Ex-AWS WW Serverless Tech Lead

George is a Senior Distinguished Engineer at Capital One. He is the Lead DE for Capital One's Serverless strategy and leads the effort to transform the company into a serverless-first organization.  He leads the Serverless Center of Excellence and is responsible for setting enterprise patterns, best practices, and the developer experience.

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Find George Mao at:


Wednesday Oct 4 / 10:35AM PDT ( 50 minutes )


Ballroom BC


Serverless AWS Lambda Cloud


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