HipChat Server provides the ability to connect to SAML idP as mentioned in the Connecting to a SAML identity provider for single sign-on. There was a plan to have it implemented for HipChat Cloud as well based on the following ticket:
It was later dropped however due to the fact that Atlassian is already sunsetting HipChat Cloud & Stride based on the public announcement here - Stride and Hipchat Cloud End of Life: Just over 90 days away.
I hope that helps to provide clarity to the question you have here. Please let me know if you have any further questions.
All good things come to an end - thanks to all our customers and partners who have been along the Hipchat and Stride journey with us. As of Feb 15th 2019, Hipchat Cloud and Stride have reached ...
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