Receive, by a central controller engine, a user request to perform one or more operations associated with user data, wherein the user data includes first data and second data. Select, by the central controller engine based on the user request, a first service provider interface (SPI) integrated into a first service, the first SPI being configured to operate on the first data in a first datastore associated with the first service. The first SPI including a first service interface component configured based on a uniform access specification. Obtain, by the first SPI, the first data, the first data being formatted according to a first service data specification. Transform, by the first SPI based on the uniform access specification, the first data, thereby generating transformed first data formatted according to the uniform access specification. Provide, by the first SPI, the transformed first data to a target service.