Single Sign-On for Flex now GA; preview URL for SSO is deprecated

Single Sign-On (SSO) for Flex is now Generally Available. Flex SSO is used to login each user into the Flex UI and it handles the authentication and authorization of all requests from Flex to Twilio's APIs.

Breaking Change: We have now deprecated our original SSO Login URL (preview.twilio.com/iam), and we recommend all users update their SSO configuration. Details on the required configuration changes are available in our migration guide.

Note: An earlier version of this update indicated the deprecated login URL would be disabled on April 1, 2020.