# The adapter family

- The technical requirements list Plus adapters for Agent Desktop Toolkit, Epic, Microsoft Dynamics 365, NetSuite, Oracle, Salesforce, ServiceNow, and Zendesk. They use HTTPS and Secure WebSocket. The desktop page says a pre-built adapter and Plus share the same underlying technology, and that a CRM SDK exists when you bring your own CRM.
- The product API page also names Web Connectors. A connector that pops a URL is not the same object as a full Plus adapter. Say which one you deployed.
- Name the adapter, the SDK, or the connector
- Keep WSS in the design

## Sources and go deeper

- [Web adapter requirements](https://documentation.five9.com/bundle/technical-reqs/page/technical-reqs/agent-integrations/web-based-adapters/application-requirements.htm). vendor. last checked 2026-10.
- [Agent Desktop](https://www.five9.com/products/capabilities/agent-desktop). vendor. last checked 2026-10.
- [APIs and SDKs](https://www.five9.com/platform/integrations-and-ecosystem/apis-and-sdks). vendor. last checked 2026-10.
- [Technical requirements PDF](https://documentation-be.five9.com/bundle/five9-technical-requirements/raw/resource/enus/five9-technical-requirements.pdf). vendor. last checked 2026-10. Fetched for this lab in October 2026. Re-read before you buy hardware or open a firewall.
- [RFC 6455, The WebSocket Protocol](https://www.rfc-editor.org/rfc/rfc6455). rfc. last checked 2026-10.