Data Structure

In plain words: An Apex wrapper class is a custom container that groups different data types (like standard Salesforce records, lists, booleans, or strings) into a single custom object. It acts like a virtual package that makes it easy to pass complex data between your backend code and your frontend user interface. In Salesforce development, you will frequently need to pass complex data structures between your backend Apex logic and your frontend Lightning Web Components (LWC). Because a standard Salesforce SObject (like an Account or Contact) cannot hold custom, non-database variables on the fly, wrapper classes serve as the perfect vehicle. By grouping related data into one unit, you keep your code organized, scalable, and much easier to read.