|\3=. *Additional services*|
|"Websockets server":install-ws.html |Event distribution server.|Required to view streaming container logs in Workbench.|
|"Shell server":install-shell-server.html |Synchronize (create/delete/configure) Unix shell accounts with Arvados users.|Optional.|
|"Git server":install-arv-git-httpd.html |Arvados-hosted git repositories, with Arvados-token based authentication.|Optional, but required by Workflow Composer.|
|\3=. *Crunch (running containers)*|
|"arvados-dispatch-cloud":crunch2-cloud/install-dispatch-cloud.html |Allocate and free cloud VM instances on demand based on workload.|Optional, not needed for a static Slurm cluster such as on-premises HPC.|
|\3=. *Additional services*|
|"Websockets server":install-ws.html |Event distribution server.|Required to view streaming container logs in Workbench.|
|"Shell server":install-shell-server.html |Synchronize (create/delete/configure) Unix shell accounts with Arvados users.|Optional.|
|"Git server":install-arv-git-httpd.html |Arvados-hosted git repositories, with Arvados-token based authentication.|Optional, but required by Workflow Composer.|
|\3=. *Crunch (running containers)*|
|"arvados-dispatch-cloud":crunch2-cloud/install-dispatch-cloud.html |Allocate and free cloud VM instances on demand based on workload.|Optional, not needed for a static Slurm cluster such as on-premises HPC.|