What is the role of the remote data source interface in system architecture?

The remote data source interface in the system architecture is responsible for abstracting access to data that resides outside the local device or application — for example, on a server or in the cloud. Its roles include:

• Defining methods for retrieving, sending, and updating data.
• Hiding the details of network requests and protocols.
• Providing a unified contract for interacting with the remote API.

This allows other system components to work with data without worrying about how it is obtained, simplifying maintenance and testing.

Example interface:

interface RemoteDataSource {
    suspend fun fetchUser(id: String): User
    suspend fun sendData(data: Data): Result
}