Integration with Other Applications
Taskcluster is built to mix in with other applications in a larger CI environment. Aside from the platform services, no Taskcluster component is privileged and other implementations are always possible.
For example, the Taskcluster tools site is built to be generally useful and to provide a clear view of the Taskcluster system, but may not be suited to providing the information your developers need. It's easy to write a new frontend that uses the Taskcluster services to generate a dashboard specific to your project, and even to authenticate users and allow them to manipulate tasks and other APIs via your site.
Backend applications can create tasks and call other Taskcluster API methods. They can also listen for Taskcluster-related events via Pulse and react appropriately, perhaps recording test performance statistics into a database for later analysis.