Software testing is the process of evaluating and verifying the functionality, performance, and quality of a software product or application. It involves identifying defects, errors, and discrepancies in the software and ensuring that it meets the desired requirements and specifications. The primary objective of software testing is to identify and fix defects before the software is released into production. This helps to reduce the risk of failures, errors, and security breaches that could result in damage to the organization or its customers. There are various types of software testing, including manual testing, automated testing, performance testing, security testing, and more. Each type of testing has its own unique set of tools, techniques, and methodologies to identify defects and ensure software quality. In addition to identifying defects, software testing also helps to improve the overall quality of the software product. By uncovering issues early on in the development process, developers can fix the issues and improve the software design, functionality, and usability. Overall, software testing is a critical component of the software development lifecycle, ensuring that software products are functional, reliable, and secure. It helps to reduce costs, improve customer satisfaction, and protect the reputation and brand of the organization.