Information about changes to the SharePoint Online Public Website feature in Office 365
Starting January 2015, Microsoft is making changes to the SharePoint Online Public Website feature. Customers who currently use this feature will continue to have access to the feature for a minimum of two years after the changeover date of March 9, 2015. New customers who subscribe to Office 365 after the changeover date won’t have access to this feature. Moving forward, Office 365 customers will have access to industry-leading third-party offerings that will enable them to have a public website that provides a complete online solution and presence.
For more information: https://support.microsoft.com/en-us/kb/3027254