# Operate and maintain Day-two operations cover the work that keeps a deployment healthy after it's installed: upgrades, provisioning capacity, and eventual removal. ## What this phase covers - [External provisioners](https://coder.com/docs/install/operate/provisioners.md) to isolate workspace builds from the control plane and to add build capacity. - [Upgrading](https://coder.com/docs/install/operate/upgrade.md), including [upgrade best practices](https://coder.com/docs/install/operate/upgrade/best-practices.md) and the Extended Support Release upgrade paths. - [Uninstall](https://coder.com/docs/install/operate/uninstall.md), for decommissioning a deployment and removing the resources it created. ## What lives elsewhere Ongoing administration isn't part of this section. Authentication, user and group management, templates, networking, monitoring, and security are covered in [Administration](https://coder.com/docs/admin.md). Revisit [Plan your deployment](https://coder.com/docs/install/plan.md) when your user count outgrows the size you originally chose, and [Validate your deployment](https://coder.com/docs/install/validate.md) after any change large enough to alter the load profile.