Notice: After May 31, 2027, App Service, Azure Functions, and Logic Apps no longer accept connections using TLS 1.0 or TLS 1.1. Applications and clients connecting to these services must support TLS 1.2 or later by then.
What is Azure App Service?
Azure App Service is a fully managed PaaS platform for hosting web applications, REST APIs, and mobile backends. The service supports multiple programming languages, offers built-in CI/CD, and automatically scales based on load.
Core Features
- Multi-Language Support: Native support for .NET, Java, Node.js, Python, and PHP on Windows and Linux
- Container Support: Docker containers for runtimes and frameworks that aren’t natively supported
- Deployment Slots: Staging environments for zero-downtime deployments
- Auto-Scaling: Automatic scaling based on metrics or schedule
- CI/CD Integration: Native integration with GitHub Actions, Azure Pipelines, and Bitbucket
- Managed SSL: Automatic TLS certificates for custom domains (free managed certificate available)
Typical Use Cases
Enterprise Web Apps: Companies host internal and customer-facing web applications. Deployment slots enable safe releases with immediate rollback on issues.
REST APIs and Microservices: Backend teams deploy APIs with automatic scaling. VNET integration securely connects services to databases and internal systems.
Mobile Backends: Mobile apps use App Service for authentication, push notifications, and data synchronization. Connectivity is available from iOS, Android, and .NET MAUI apps (the successor to Xamarin).
Benefits
- No infrastructure management required
- Automatic OS patches and security updates
- Built-in authentication with Microsoft Entra ID as well as social logins such as Google, Facebook, and X
- Globally distributable, e.g. combined with Azure Front Door or Traffic Manager
Integration with innFactory
As a Microsoft Solutions Partner, innFactory supports you with Azure App Service: We migrate existing applications, implement CI/CD pipelines, and optimize performance and costs for your web workloads.
Available Tiers & Options
Free/Shared
- No cost
- For testing and demos
- Shared infrastructure
- No SLA
- Limited features
Basic
- Dedicated VMs
- Custom domains
- Manual scaling
- No auto-scale
- No deployment slots
Standard
- Auto-scaling
- Deployment slots
- Production ready
- Higher cost
Premium
- More scaling
- VNET integration
- Better performance
- Premium pricing
Typical Use Cases
Technical Specifications
Frequently Asked Questions
Which programming languages are supported?
App Service natively supports .NET, Java (SE, Tomcat, JBoss), Node.js, Python, and PHP on Windows and Linux. Ruby has not been maintained as a native runtime stack since 2023; any language or framework can be deployed via containers.
What are Deployment Slots?
Deployment Slots are separate instances of the app for staging, testing, or blue-green deployments. Traffic can be split between slots for canary releases.
How does Auto-Scaling work?
App Service scales based on CPU, memory, HTTP queue length, or custom metrics. Rules define min/max instances and thresholds.
Can I connect App Service to a VNet?
Yes, VNET integration enables access to backend services in private networks. Private Endpoints make App Service itself only internally accessible.
What is the difference from Azure Functions?
App Service is optimized for long-running web apps and APIs. Azure Functions suits event-driven, short-lived workloads with automatic scale to zero.
Note: All product information on this page has been compiled with care, but is provided without guarantee and may be outdated or incomplete. Cloud services evolve rapidly — features, pricing, SLAs, and availability change frequently. Authoritative and up-to-date information can only be found on the official product page of Azure (official documentation). This page does not represent an offer by Azure.
