> For the complete documentation index, see [llms.txt](https://developer.harness.io/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://developer.harness.io/release-orchestration/3.0/activity-types.md).

# Activity Types

- [Automated Activities](https://developer.harness.io/release-orchestration/3.0/activity-types/automated-activities.md): Learn about automated activities and how to configure them
- [Manual Activities](https://developer.harness.io/release-orchestration/3.0/activity-types/manual-activities.md): Learn about manual activities and how to configure them for human intervention
- [Subprocess Activities](https://developer.harness.io/release-orchestration/3.0/activity-types/subprocess-activities.md): Learn about subprocess activities and how to compose processes from other processes
- [Reusable Activities](https://developer.harness.io/release-orchestration/3.0/activity-types/reusable-activities.md): Learn how to create and use reusable activities across multiple processes