Overview:
When deploying web applications on Azure, it’s essential to follow best practices and choose the right deployment patterns. In this summary, we’ll explore various Azure App Service deployment architectures, including basic web apps, zone-redundant setups, multi-region deployments, and reliable web app patterns.
Key Deployment Patterns
We can categorize Web Apps deployments in below categories:
We can categorize Web Apps deployments into the following categories:
1. App Service deployment:
– Basic web app: A basic web app is a basic web application that runs on a single instance and is deployed using the Azure App Service.
– High availability and scalability: To achieve high availability and scalability, multiple instances of the app can be distributed across multiple regions using Azure Traffic Manager or Azure Load Balancer.
2. App Service Environment deployment:
– App Service Environment: An App Service Environment is a managed environment that provides isolation and dedicated resources for your web applications. It is ideal for applications that require higher performance and security.
– App Service Environment Mesh: App Service Environment Mesh is a containerized deployment pattern that allows multiple apps to run in isolated environments, sharing common resources such as databases and caching tiers.
3. On-prem connectivity and security scenarios:
– Hybrid connectivity: To connect your on-premises network to Azure, you can use Azure ExpressRoute or VPN. This allows for secure communication between your application and on-premises resources.
– Authentication and authorization: Azure provides various authentication and authorization mechanisms to secure your web applications, including Azure Active Directory (AAD), custom authentication, and secure tokens.
Exploring Design patterns in details:
Lets explore all these design patterns in details.
A: App Service
1. Basic Web Apps
Basic web application – Azure Reference Architectures | Microsoft Learn
Below architecture shows the fundamental components of a basic web application.
You can use the architecture to build a web application and then customize the application to your needs.
2. Baseline highly available zone-redundant web application
3. Highly available multi-region web application
Highly available multi-region web app – Azure Architecture Center | Microsoft Learn
4. Reliable web app pattern for .NET – Apply the pattern – Azure Reference Architectures | Microsoft Learn
B. App Service Environment
5. Enterprise deployment using Azure App Service Environment
Enterprise deployment using Azure ASE – Azure Reference Architectures | Microsoft Learn
6. High availability enterprise deployment using App Service Environment
HA enterprise deployment using ASE – Azure Architecture Center | Microsoft Learn
7. Azure Spring Apps baseline architecture
Azure Spring Apps baseline architecture – Azure Architecture Center | Microsoft Learn
8. Deploy Azure Spring Apps to multiple regions
Deploy Azure Spring Apps to multiple regions – Azure Architecture Center | Microsoft Learn
9. Mission-critical baseline with App Service
Mission-critical baseline with App Service – Azure Architecture Center | Microsoft Learn
10. Deploy a line-of-business application using Azure App Service Environment v3
11. E-commerce website running in secured App Service Environment – Azure Architecture Center | Microsoft Learn
12. Azure Spring Apps integrated with landing zones – Azure Architecture Center | Microsoft Learn
13. Deploy web apps by using zone-redundant Azure Red Hat OpenShift – Azure Reference Architectures | Microsoft Learn
14. Improved-security access to multitenant web apps from an on-premises network
How to set up improved-security private connectivity to a multitenant web app or function app from an on-premises network or from within an Azure virtual network. It also shows how to set up improved-security connectivity between the app and other Azure PaaS services over Azure Private Link, without using the public internet.
C. On-Prem Connectivity & Security Scenarios
Scenario: Connectivity between on-prem N/w to Azure N/W
Ques: How do you set up improved-security private connectivity to a multitenant web app or function app from an on-premises network or from within an Azure virtual network.
Ques: how to set up improved-security connectivity between the app and other Azure PaaS services over Azure Private Link, without using the public internet.
Scenario: Protect access tokens in a single-page application by using Azure API Management
Scenario: Expose Azure Spring Apps through a reverse proxy – Azure Architecture Center | Microsoft Learn
Conclusion
Choosing the right deployment pattern depends on your specific business needs and existing application characteristics. Whether you’re migrating from on-premises or building new cloud-native apps, Azure provides flexible options to ensure scalability, security, and high availability.
References:
https://learn.microsoft.com/en-us/azure/architecture/web-apps/app-service/architectures/multi-region