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Azure App Service — Managed Web Hosting with Deployment Slots

Master Azure App Service for managed web hosting, including deployment slots for zero-downtime deployments, scaling, and when to use it over Vercel.

13 min readazure, app-service, deployment, scaling, hosting, web-apps

Vercel is wonderful until your client says, "It has to run on Azure." Maybe their company policy requires all infrastructure in Azure. Maybe their compliance team has approved Azure but not Vercel. Maybe their enterprise agreement makes Azure compute effectively free. Whatever the reason, you need an alternative.

Azure App Service is that alternative. It is a fully managed web hosting platform that supports Node.js, Python, .NET, Java, PHP, and Ruby applications. You push code, App Service handles the servers, patching, scaling, and load balancing. It is PaaS in the classic sense — similar in concept to Vercel but designed for the enterprise world.

The standout feature that sets App Service apart from most competitors is deployment slots — the ability to deploy a new version of your

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