Hey William, in case you didn't find this out already, yes the MCSA: Office 365 certification is retiring, the same applies for the MCSA: Windows 10, both retire March 31, 2019. Check the blog below for updates, there is still a lot developing news around this and the new role-based certifications.

 

https://www.microsoft.com/en-us/learning/community-blog.aspx

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