AppRiver Technical GuidesOffice 365 - Sharepoint 2013 Administrator GuidesHow to set a Custom URL for your SharePoint Site

How to set a Custom URL for your SharePoint Site

As of January 2015, Microsoft has discontinued the Public Sites feature. You can no longer change the URL of your SharePoint Public Site.

 

Please visit this link to read the article published by Microsoft

 

https://support.microsoft.com/en-us/kb/3027254/