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In this video tutorial, the speaker introduces the topic of content providers in Android. Each app in the Android operating system runs in a separate process, meaning app data is private and inaccessible to other apps. When one app (app 2) needs to access another's (app 1's) database, it cannot do so directly. Instead, app 2 must request data from app 1, which raises concerns about secure data sharing. The solution is the content provider, a component that allows app 1 to expose its data in a secure manner. App 2 uses an API called content resolver to request data from app 1's database, and the content provider in app 1 responds with the requested data in a specific format.