# The domain has neighbors

- A Five9 domain does not live alone. Voice arrives on a SIP story. Agents sit in a desktop. WEM or a partner workforce suite watches the roster. A CRM pops. GenAI Studio may draft a summary. E911 carries a location. Reports leave through a role and an API.
- The ecosystem page in this lab is a map of those neighbors with the same citations as the lessons. If a box has no link, it does not belong on the map.
- Name the neighbors
- Give each one its own failure

## Sources and go deeper

- [Agent Desktop](https://www.five9.com/products/capabilities/agent-desktop). vendor. last checked 2026-10.
- [Workforce engagement management](https://www.five9.com/products/capabilities/workforce-optimization). vendor. last checked 2026-10.
- [APIs and SDKs](https://www.five9.com/platform/integrations-and-ecosystem/apis-and-sdks). vendor. last checked 2026-10.
- [E911 data sheet](https://www.five9.com/sites/default/files/2022-11/Data-sheet-Five9-emergency-services%20%28E911%29.PDF). vendor. last checked 2026-10.
- [RFC 3261, SIP: Session Initiation Protocol](https://www.rfc-editor.org/rfc/rfc3261). rfc. last checked 2026-10.
- [Enhanced 9-1-1](https://en.wikipedia.org/wiki/Enhanced_9-1-1). wikipedia. last checked 2026-10.