A software framework provides reusable structure, conventions, and tools that help developers build applications.
A prepared application structure
A framework supplies conventions and reusable building blocks for common concerns such as routing, data access, rendering, or dependency management. Developers fill in the application-specific behavior.
Convention shapes the project
Framework choices influence testing, upgrades, performance, and hiring. The abstraction saves time when it fits the problem, but can become restrictive when its assumptions do not.