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Which Sharepoint Online version am I using? SharePoint Experience Version 2013 or 2016
Hello All, Pls help to clarify this point is which SharePoint platform version is used for SharePoint Online, 2013 or 2016? We have a customer they need to check their O365 SharePoint Online is 2013...
- All SharePoint Online tenants are updated to SharePoint 2016 (the SPO branch/version of it. There's only two experience versions 2010 and 2013 - SharePoint 2016 is using the 2013 experience version.
Don't worry that the URL states _layouts/15/..., it's the same in 2013 and 2016.
As you can see from your screenshot; you are on experience version 2013 and your site collection is already updated.
The "15" in URL's is no clear indicator of the version of SharePoint being used.
This article provides a lot of detail on different versions, hope this helps
https://support.office.com/en-us/article/Which-version-of-SharePoint-am-I-using-3575ff57-037f-48cf-9398-99080c34b25f?ui=en-US&rs=en-US&ad=US&fromAR=1