Flask is a lightweight web framework written in Python that provides the basics to build a web app.
Flask is beginner-friendly and has a gentle learning curve, allowing users to build functional applications with just a few lines of code.
Flask is particularly suitable for building APIs and microservices that do not require the complexity of larger frameworks like Django.
While Flask offers a rich ecosystem of extensions, it may require more effort to set up certain features in large-scale applications and lacks a default folder structure.