Google just announced a change for users in Europe that will let them decide exactly how much data-sharing they’re comfortable with. The new policy, which the company said was in response to the EU’s Digital Markets Act (DMA), allows users to opt out of data sharing across all, some, or none of a select number of Google’s services. The services listed include YouTube, Search, ad services, Google Play, Chrome, Google Shopping, and Google Maps. But the policy isn’t watertight — Google will still share user data when it’s necessary to complete a task (e.g., if you’re paying for a purchase on Google Shopping with Google Pay) in order to comply with the law, stop fraud, or protect against abuse.

That’s not the biggest change that Google will have to make to comply with the DMA, which goes into effect on March 6th. The law also includes additional rules on interoperability and competition. For example, Google will no longer be able to treat its own services more favorably in Search’s ranking than other third-party services.