.NET Fundamentals – Libraries

Provides classes and interfaces that define generic collections, including lists, queues, and dictionaries.

Contains types that allow reading and writing to files and data streams, and provides basic file and directory support.

Provides a programming interface for modern HTTP applications, including HttpClient.

Offers types that simplify the work of writing asynchronous code and managing concurrent operations.

Provides high-performance JSON serialization and deserialization, with support for custom converters.

Defines a logging abstraction that can be used across .NET applications with various providers.