What it does
Azure App Service is Microsoft's managed platform for web applications and APIs. A deployment selects a runtime, operating system, region, and App Service plan; that plan defines the compute resources available to its apps. The service supports common web stacks such as Node.js on Linux or Windows, with deployment paths through the Azure portal, Visual Studio Code, or the Azure CLI.
The plan is the unit of capacity
The official Node.js quickstart starts with an Azure account and an active subscription. Its Visual Studio Code and portal paths show the Free tier, while the CLI path uses paid Premium v3. In the walkthrough, choose a runtime, operating system, region, and App Service plan; for Node.js, the app must listen on the port supplied through the PORT environment variable.
The plan sets region, instance size and count, operating system, and pricing tier. Apps within the same plan share its VM instances. Free and Shared tiers run on shared compute and cannot scale out, so they are suitable for a basic evaluation but not equivalent to dedicated capacity. The Linux pricing page opened, but its fetched text did not expose a usable rate table. Exact regional charges and one overall billing classification therefore remain unresolved.
Strengths
- The Node.js quickstart documents portal, Visual Studio Code, and Azure CLI deployment paths.
- Plan settings make region, OS, instance count, VM size, and tier explicit choices.
- The quickstart demonstrates a Free F1 deployment path.
Watch out for
- Apps in the same plan share its VM instances and capacity.
- Free and Shared tiers use shared compute and cannot scale out.
Best for
- Hosting a supported web application without managing its host operating system.
- Running multiple compatible apps on a shared plan when their scaling needs align.
- Evaluating an app deployment with the documented Free F1 path before selecting another tier.
Sources
- Azure App Service | Microsoft Azure (Oct 25, 2026)
- Quickstart: Create a Node.js Web App - Azure App Service | Microsoft Learn (Oct 25, 2026)
- Azure App Service Plans - Azure App Service | Microsoft Learn (Oct 25, 2026)
- Pricing – App Service for Linux | Microsoft Azure (Oct 25, 2026)