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Azure Functions vs AWS Lambda for C# in 2026: cold starts, Native AOT, pricing math and real code. See the pricing math and pick the right platform. If you're building serverless apps in .NET, you'll hit the Azure Functions vs AWS Lambda question sooner or later. Both run C# well. Both charge per execution. Both claim to scale to zero. In 2026, though, the details that matter have changed. Azure's in-process model is being retired, the Flex Consumption plan has matured, AWS now bills the Lambda INIT phase, and Native AOT and SnapStart have made .NET cold starts much faster. This guide compares cold starts, throughput, and real pricing math, with runnable C# code for both platforms, so you can pick based on numbers. Azure Functions vs AWS Lambda: The 2026 Landscape at a Glance Before looking at benchmarks, here's what each platform offers C# developers today: Azure Functions : The isolated worker model is now the only supported way forward. Support for the...

Learn how to build a serverless REST API with AWS Lambda C# and API Gateway. Step-by-step .NET 8 tutorial with runnable code. Start building today. Building a serverless REST API with AWS Lambda C# and Amazon API Gateway is one of the fastest ways to ship a production-ready backend without managing a single server. You write .NET 8 handler code, API Gateway routes HTTP requests to it, and AWS scales the whole thing from zero to thousands of requests per second automatically — and you pay only for the milliseconds your code actually runs. In this tutorial you'll build a complete serverless REST API in C#: a Products service with GET , POST , and DELETE endpoints. We'll cover both the low-level Lambda proxy integration model (so you understand what's actually happening) and the ASP.NET Core Minimal API hosting model (so you can reuse your existing skills). Along the way you'll learn why serverless behaves the way it does, how to avoid cold-start pain, and the mis...