Entitlement Process - Chirag-ahir/SFC-Preparation GitHub Wiki
An entitlement is a record that represents a customer's right to receive support or service based on the terms of a contract or agreement. You need to enable entitlement from setup in order to use it.
Milestone defines a specific action or task that must be completed by the support team within a defined timeframe
The entitlement object is a junction object between Entitlement Process and Case.