# Temporal Encyclopedia

> Discover the key concepts, components, and features of Temporal for building scalable and reliable applications. Learn about Temporal SDKs, Workflows, Activities, Workers, and more.

[Temporal](/evaluate/why-temporal) provides developers a suite of effective tools for building reliable applications at scale.

The following Encyclopedia pages describe the concepts, components, and features of Temporal in detail:

- [Temporal](/temporal)
- [Temporal SDKs](/encyclopedia/temporal-sdks)
- [Temporal Client](/temporal-client)
- [Workflows](/workflows)
- [Activities](/activities)
- [Failures and error handling](/encyclopedia/failures-and-error-handling)
- [Workers](/workers)
- [Event History](/encyclopedia/event-history/)
- [Workflow Message Passing](/encyclopedia/workflow-message-passing/)
- [Child Workflows](/child-workflows)
- [Visibility](/visibility)
- [Temporal Service](/temporal-service)
- [Namespaces](/namespaces)
- [Temporal Nexus](/nexus)
- [Extensibility](/encyclopedia/extensibility)

For a complete list of Temporal terms, see the [Glossary](/glossary).

For information on how to implement the developer-facing features see the [Develop](/develop) section.

For information on how to use Temporal Cloud see the [Temporal Cloud production deployment](/cloud) section.

For information on how to self-host a Temporal Service see the [Self-hosted production deployment](/self-hosted-guide) section.