If you’re concerned about your privacy or just would like to be compliant with GDPR policy you might want to disable Delve for your O365 Tenant account.
Delve helps users discover relevant content based on who they work with and what they’re working on. By Default Delve is enabled and users in your organization can access Delve (powered by Office Graph) along with its features. More information on Delve and GDPR topic can be found here.
In order to Disable delve and related features please navigate to:
https://admin.microsoft.com/AdminPortal
In the left pane under Admin Centers select Sharepoint
In the left pane click Settings
From the right pane click on Can’t find the setting, you’re looking for? Go to the classic settings page.
Under Delve (powered by Office Graph) select Disable Delve and related features. Now click OK on the bottom of the page.
That’s it! Hopefully, this article can help you to disable Delve for your O365 Tenant.