What are the Benefits / Uses of Read/Write RPMB Partition ?

Somebody plz guide me, What are the Benefits / Uses of Read/Write RPMB Partition ?

ravikushwaha565 e.MMC Security Features Evolution 4
2.1 Password Lock 4
2.2 Write Protect 5
2.3 RPMB – Replay Protect Memory Block

ravikushwaha565 RPMB Use Cases 8
4.1 Example 1 – Downgrade Attack 8
4.2 Example 2 – Unlock 9
4.3 Example 3 – Secured Boot and Secured Write Protect