Understanding the differences between smoke testing and regression testing is crucial for software professionals, as each serves distinct purposes in the software development lifecycle. Smoke testing, often referred to as build verification testing, involves a small set of tests aimed at ensuring the stability of core functionalities in a new software build, allowing developers to identify broken builds early and avoid wasting resources on further testing. In contrast, regression testing is a comprehensive process that ensures all features of the software function correctly, particularly after code changes such as bug fixes or new features, and it is essential for confirming that recent updates have not adversely affected other parts of the software. While regression testing is typically more time-consuming and detailed, involving the entire QA team, smoke testing can sometimes be managed by developers. Automation tools, such as testRigor, offer significant benefits by streamlining both smoke and regression testing, saving time, reducing manual labor, and allowing QA teams to focus on enhancing other areas of the software project, resulting in happier QA testers, developers, product owners, business owners, and end-users.