Maps are dynamic key-value pairs in Elixir, while Structs are a special type of map with predefined keys. Structs provide compile-time checks and better organization for your data.

In Elixir, both Maps and Structs are used to store key-value pairs, but they serve different purposes and offer distinct features. A Map is a flexible data structure that can hold dynamic key-value pairs, allowing you to add or remove keys at runtime without any predefined structure. This makes Maps ideal for scenarios where the keys are not known in advance or where the data structure may change frequently. You can easily manipulate Maps using functions like Map.put/3 and Map.delete/2. On the other hand, Structs are a special kind of map with a fixed set of keys defined at compile time. When you define a Struct, you specify the fields it contains, providing a clear structure for the data it represents. This fixed structure enables compile-time checks, allowing the Elixir compiler to verify that you are using the correct keys, which reduces the likelihood of runtime errors. Structs also come with default values, making them more organized and self-documenting. While both Maps and Structs are useful for different purposes, the choice between them often depends on whether you need a dynamic or a structured approach to data management in your Elixir application.