Flask is a lightweight and flexible web framework written in Python. Known for its simplicity and minimalism, Flask provides developers with the tools needed to build web applications quickly and efficiently. While it is often referred to as a micro-framework due to its core simplicity, Flask can be easily extended with additional libraries to meet the requirements of more complex projects. Flask is an excellent choice for developers seeking a simple and versatile web framework in Python. Its flexibility and ease of use make it particularly well-suited for small to medium-sized projects, prototypes, and applications where a microframework approach is preferred.