Spring Data is a high-level Spring Source project. Its purpose is to unify and easy access to the different kinds of persistence stores, both relational database systems, and NoSQL data stores.  

Spring Data JPA Features

There are three main features of Spring Data JPA are as follows:

No-code repository: It is the most popular persistence-related pattern. It enables us to implement our business code on a higher abstraction level.

Reduced boilerplate code: It provides the default implementation for each method by its repository interfaces. It means that there is no longer need to implement read and write operations.

Generated Queries: Another feature of Spring Data JPA is the generation of database queries based on the method name. If the query is not too complex, we need to define a method on our repository interface with the name that starts with findBy. After defining the method, Spring parses the method name and creates a query for it. For example: 

https://www.javatpoint.com/spring-boot-starter-data-jpa#:~:text=Spring%20Data%20is%20a%20high,systems%2C%20and%20NoSQL%20data%20stores.