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Welcome to Appsody

Appsody is designed to help you develop containerized applications for the cloud.

If you're a software developer, our aim is to greatly improve your developer experience by removing the burden of managing the full software development stack. With Appsody, you can build applications for the cloud that are ready to be deployed to Kubernetes without being an expert on the underlying container technology. You can simply focus on the important stuff - developing application code!

If you're responsible for defining standards for application runtime environments such as software levels, Appsody allows you to control the stacks that your developers use. You can define a set of technologies that are configurable, reusable, and already infused with cloud native capabilities. You get to implement and maintain your standards, ensuring consistency and reliability.

Appsody consists of 3 key components:

Appsody Stacks

These are configurable technology stacks built with popular runtimes and frameworks, such as Java with Eclipse MicroProfile and Node.js with Express. These stacks provide the foundation for building applications that can be deployed and managed effectively in Kubernetes. Stacks allow for rapid development, whilst giving the stack provider the ability to control how the applications are composed. For example, which security policies are applied or which version of a dependency is used. For more information, see Appsody Stacks.

Appsody Hub

The Hub is the central point of control for Appsody Stacks where you can find available stacks, create new stacks, or modify existing ones. There are 3 stack stability levels - stable, incubator, and experimental. Stable stacks are production-ready. You can use the Hub content in the public repo or clone it to provide a private Hub that's based on your requirements. By making changes to the Stacks in the Hub, you can deploy updates to any application that's been built on them, simply by restarting the application. You can also create individual stacks outside of the Hub, that can be supported by the Appsody CLI.

Appsody CLI

No project is complete without a nice new CLI to play with. The Appsody CLI is powerful and intuitive, allowing developers to discover the available stacks and bring them into their local development environment. From here, they can build, run, test, and deploy applications locally. The Docker container that's built for an application can then be integrated with Tekton pipelines and deployed to Kubernetes cloud environments. For more information, see Deploying your app through a Tekton pipeline.

How does it work?

Appsody simplifies the creation of cloud-native applications and helps you throughout the development lifecycle.

Appsody provides preconfigured application stacks, which specify the language runtimes, frameworks, libraries, and tools you want to use. Appsody stacks abstract infrastructure and application concerns and provide consistency and maintainability across your deployments. Project templates build upon these stacks, providing developers with a starter application to bring into their IDE of choice and begin development.

You can use the Appsody CLI to discover the preconfigured technology stacks, which provide everything you need to get started building apps. Stacks can be customized and extended to suit you or your teams use cases and standards. Using stacks can be a great way to enable new developers in your team to become productive faster.

After you choose the stack that you want to work with, you can get started by using the init command to pull a container image for the stack to your development environment.

Appsody provides an inner loop development experience. When developers run, debug, or test their application by using the Appsody CLI it starts a container with the stack image, makes the development workspace available to the running container, and starts the application. The Appsody controller watches for file changes and manages live updates to your application within the running container.

When your application is ready, you can build it into a production-ready image and push the image to a registry. You can also deploy the application using the Appsody operator to a local, or remote Kubernetes cluster.

Appsody Architecture


We welcome all contributions.

If you'd like to get involved, read our Contribution guidelines and come and chat to us in Slack.

Want to see your framework available as an Appsody Stack? See Appsody Stacks and join the #stack-providers channel on Slack to introduce yourself!


This project is licensed under the Apache 2.0 license, and all contributed stacks must also be licensed under the Apache 2.0 license. Each contributed stack should include a LICENSE file containing the Apache 2.0 license. More information can be found in the LICENSE file or online at