Data Protection policies for web apps

Hi MohFarah, what is it that you are looking for exactly? Do you want to limit access to Office 365 Online? Like copy/paste/download on unmanaged devices? If so, you can do a couple of things:

1. Restrict access from unmanaged devices to SharePoint Online and Exchange Online
   1. https://docs.microsoft.com/en-US/sharepoint/control-access-from-unmanaged-devices?WT.mc_id=365AdminCSH_spo
   2. https://docs.microsoft.com/en-us/powershell/module/exchange/set-owamailboxpolicy?view=exchange-ps (ReadOnly)
2. Create a conditional access policy with https://docs.microsoft.com/en-us/azure/active-directory/conditional-access/concept-conditional-access-session#application-enforced-restrictions
3. https://docs.microsoft.com/en-us/defender-cloud-apps/proxy-intro-aad

Please note: When you set policies from the SPO admin portal. It will create 2 conditional access policies targeting all users. Keep that in mind ;).

Hope this helps.