Where is MettleCI installed?

MettleCI Workbench: Installed on DataStage Engines where we want to run Compliance, build and execute Unit Tests, and Commit to Git.
MettleCI Unit Test Harness: Installed on DataStage Engines where we want to execute Unit Tests.

In most cases this means installing MettleCI Workbench and Unit Test Harness on your DEVELOPMENT DataStage Engine Tier.

MettleCI Command Line: Installed on a dedicated host alongside your build system's agent and a DataStage thick (Windows) client.

The following documents should provide everything you need to answer technical deployment questions: