Azure Spring Apps is a fully managed service for Spring Boot apps that lets you focus on building the apps that run your business without the hassle of managing infrastructure. Simply deploy your JARs or code and Azure Spring Apps will automatically wire your apps with the Spring service runtime. Once deployed you can easily monitor application performance, fix errors, and rapidly improve applications.

Azure Spring Apps is jointly built, operated, and supported by Microsoft and VMware. You can use Azure Spring Apps for your most demanding applications and be assured that Microsoft and VMware are standing behind the service to ensure your success.

This repository contains instructions for creating an Azure Spring Apps reference architecture that can be used for experimenting with Spring Boot applications in a typical enterprise landing zone design for a regulated organization. It uses a hub and spoke architecture with a single spoke. East/West traffic (traffic between resources in the hub and resources in the spoke) is filtered with Network Security Groups and North/South traffic (traffic between the Internet and resources in the hub or spoke) is routed through and mediated with an instance of Azure Firewall.

Additional features of this quickstart are:

• Azure Spring Apps is deployed using vnet-injection to allow for mediation inbound and outbound traffic to the Azure Spring Apps Instance and deployed applications.
• The Azure Firewall instance has been configured to write its logs to a Log Analytics Workspace. You can leverage these Kusto queries to analyze Azure Firewall log data written to Log Analytics.
• Hub and Spoke Virtual Networks are configured to use Azure Firewall for DNS queries utilizing the DNS Proxy feature of Azure Firewall.
• Azure Private DNS zones for Azure Spring Apps and support services deployed with Private Endpoints
• A single Windows Server 2022 Virtual Machine the hub Virtual Network for testing access to applications deployed into the Azure Spring Apps instance. This virtual machine is configured with the Microsoft Monitoring Agent and is integrated with the Log Analytics Workspace. This VM is not exposed to the internet and is only accessible via Azure Bastion (for brevity, both the VM and Azure Bastion are not shown in the diagram).
• Log Analytics Workspace where Azure Spring Apps, Azure Firewall, and the virtual machine deliver logs and metrics.
• Instance of Azure Key Vault deployed with a Private Endpoint for secrets and certificates storage for applications deployed to Azure Spring Apps
• Instance of Azure Bastion for connection to the Windows Server 2022 virtual machine running in the hub virtual network.

For Azure Spring Apps Standard SKU:

• Instance of Azure Database for MySQL flexible server deployed with VNET Integration. This can be used to deploy the PetClinic sample app described in this document.

For Azure Spring Apps Enterprise SKU:

• Instance of Azure Database for PostgreSQL flexible server deployed with VNET Integration and Azure Cache for Redis with Private endpoint. This can be used to deploy the ACME Fitness sample app described in this document.

There are three methods to deploy the architecture in the diagram documented in this repo.

• ARM Deployment
• Terraform Deployment
• CLI Deployment
• Bicep Deployment

ARM, Terraform, CLI and Bicep scripts will deploy Azure Spring Apps in a secure environment. Once the core infrastructure has been deployed, the Post Installation process can be followed to test sample applications.

Azure Spring Apps abstracts away the complexity of infrastructure management and Spring Apps middleware management, so you can focus on building your business logic and let Azure take care of dynamic scaling, patches, security, compliance, and high availability. With a few steps, you can provision Azure Spring Apps, create applications, deploy, and scale Spring Boot applications and start monitoring in minutes. We will continue to bring more developer-friendly and enterprise-ready features to Azure Spring Apps.

We would love to hear how you are building impactful solutions using Azure Spring Apps. Get started today – deploy Spring applications to Azure Spring Apps using this quickstart!

• Learn using an MS Learn module or self-paced workshop on GitHub
• Learn more about implementing solutions on Azure Spring Apps
• Deploy a distributed version of Spring Petclinic built with Spring Apps Standard
• Deploy a distributed version of ACME Fitness sample app for Spring Apps Enterprise
• Migrate your Spring Boot, Spring Apps and Tomcat applications to Azure Spring Apps
• Wire Spring applications to interact with Azure services.
• Use the Azure Spring Apps extension for VS Code to quickly create, manage and deploy apps to an Azure Spring Apps instance.

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