Hardware-in-the-Loop (HIL) Software Testing is a real-time simulation technique used to validate control systems by integrating physical hardware with virtual models. It allows engineers to test embedded software under realistic operating conditions without risking physical components. HIL testing ensures accuracy, safety, and reliability in automotive, aerospace, and industrial applications. By detecting faults early in the development process, it reduces costs, accelerates design validation, and enhances system performance before full-scale implementation. Website : https://www.servotechinc.com/hil-software-testing