# Reference Guides

- [Connections](/SaaS/configuration/integrations/data-and-integrations/registering-a-connection/reference-guides/connections-overview.md)
- [Upgrading to Connections](/SaaS/configuration/integrations/data-and-integrations/registering-a-connection/reference-guides/upgrading-to-connections.md)
- [Before You Begin](/SaaS/configuration/integrations/data-and-integrations/registering-a-connection/reference-guides/upgrading-to-connections/before-you-begin.md)
- [API Changes](/SaaS/configuration/integrations/data-and-integrations/registering-a-connection/reference-guides/upgrading-to-connections/api-changes.md)
- [FAQ](/SaaS/configuration/integrations/data-and-integrations/registering-a-connection/reference-guides/upgrading-to-connections/faq.md)