microsoft/azure-pipelines-tasks

Azure Pipelines Tasks is a collection of task modules that provide out-of-the-box functionality for Azure Pipelines and Team Foundation Server build and release workflows.

The repository addresses the need to execute common build and deployment operations within pipeline definitions. Tasks function as tool runners that encapsulate knowledge about how to invoke tools like MSBuild and VSTest, handle return codes, manage standard output and error streams, write timeline records based on expected output, and access credentials for writing back to Azure Pipelines or TFS. The project serves as both a production library of tasks and a reference implementation showing how to write custom tasks for deeper tool integration or reusability across many pipeline definitions.

Developers should use these tasks when they need first-class integration with common build tools and platforms within Azure Pipelines. The repository is most suitable for teams running continuous integration and deployment workflows on Azure Pipelines or Team Foundation Server. For custom functionality, the README notes that using existing script-running tasks such as PowerShell or Bash is often simpler than writing new tasks, and recommends writing new tasks primarily when deeper integration or broad reusability across many build definitions is required. Custom tasks can be uploaded to Azure Pipelines using the TFS Cross Platform Command Line utility or deployed within an Azure DevOps extension.

The project maintains active build and test coverage across Windows, macOS, and Linux platforms. The repository accepts contributions and has established a deprecation process for tasks that are no longer actively maintained, with deprecated tasks displaying warning banners in pipelines and being removed after a notice period. A deprecation file documents which tasks are no longer supported and provides migration guidance to replacement tasks.