BLoC (Business Logic Component) is an architecture pattern for Flutter applications. It was developed by the Google Developer Expert team and is based on the concept of separating the business logic from the UI code. This separation of concerns makes it easier to maintain and update the codebase. It also enables developers to easily reuse the business logic in multiple projects. The BLoC pattern is a great way to create robust and maintainable applications. It encourages developers to think about their application in terms of streams and sinks, which helps them to better understand their codebase and create a more maintainable architecture. The BLoC pattern has been receiving a lot of positive feedback from the developer community and is quickly becoming the go-to architecture for Flutter applications.