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Tasks are used to call Java code that implements functionality that is too complex to express with the Concord DSL and EL in YAML directly. Processes can include external tasks as dependencies, extending the functionality available for Concord flows.

For example, the Ansible plugin provides a way to execute an Ansible playbook as a flow step, the Docker plugin allows users to execute any Docker image, etc.

In addition to the standard plugins, users can create their own tasks leveraging (almost) any 3rd-party Java library or even wrapping existing non-Java tools (e.g. Ansible).

Currently, Concord supports two different runtimes. The task usage and development is different depending on the chosen runtime. See the runtime specific pages for more details: