SharePoint Online Public Websites to be discontinued
On March 9, 2015, Microsoft made changes to the SharePoint Online Public Websites feature by removing the ability to create a public website after the changeover date of March 9, 2015. Customers who used this feature before March 9, 2015, were provided continued access to the feature for a minimum of two years. New customers who subscribed to Office 365 after the changeover date of March 9, 2015, don’t have access to this feature. This means that Sharepoint Online is now meant to be used for creating private portals in the form of intranets, by utilizing one of the available Sharepoint Online site collection types, such as Document Centers and Team sites.
Moving forward, Microsoft 365 customers have access to industry-leading third-party offerings that let them have a public website that provides a complete online solution and presence.
As part of the evolution of the Microsoft 365 services, Microsoft periodically evaluate the capabilities of the service to make sure that they are delivering the utmost value to customers. After careful consideration, Microsoft concluded that for public websites, Microsoft 365 customers would be better served by third-party providers whose core competency is public websites. Therefore, Microsoft have made the difficult decision to discontinue the SharePoint Online Public Website feature so that they can focus their efforts and investments on delivering capabilities in Microsoft 365 that will bring more value to Microsoft customers.
You can migrate your SharePoint Online Public Website to a partner website. For more information, see Switch from using a SharePoint Online public website to a partner-hosted website. The following list provides the most notable web hosting providers out there, with emphasis on Sharepoint site hosting:
Source
https://docs.microsoft.com/en-us/sharepoint/troubleshoot/sites/public-websites-be-discontinued
