What is Testbench?

A testbench is a controlled environment used to verify the functionality and performance of a design or system under test (DUT/SUT). In hardware and software engineering, it typically involves creating a simulated or emulated environment where the DUT/SUT can be subjected to various inputs and conditions to ensure it meets specifications. Testbenches often include stimulus generation, response monitoring, and result analysis to automate and streamline the verification process.