Create an organization news site
To specify SharePoint sites as "official" or "authoritative" for news in your organization, mark them as organization news sites. These posts get special visual treatment (see the "NEWS @ CONTOSO" color block below), and appear on the SharePoint start page.
SharePoint admins can specify any number of organization news sites. For multi-geo tenants, organization news sites would have to be set up for each geo location. Each geo location could use the same central organization news site, and/or have its own unique site that shows organization news specific to that region.
When SharePoint home sites are released, they will be automatically configured as organization news sites.
Use Microsoft PowerShell to specify a site as an organization news site
If you installed a previous version of the SharePoint Online Management Shell, go to Add or remove programs and uninstall "SharePoint Online Management Shell."
Connect to SharePoint as a global admin or SharePoint admin in Microsoft 365. To learn how, see Getting started with SharePoint Online Management Shell.
Run the following command to designate the site as an organization news site:
Set-SPOOrgNewsSite -OrgNewsSiteUrl <site URL>
Set-SPOOrgNewsSite -OrgNewsSiteUrl https://contoso.sharepoint.com/sites/Marketing