ATL (Active Template Library)

Active Template Library (ATL) is a set of tools and templates provided by Microsoft to help developers create software components more easily, particularly for Windows applications. It simplifies the process of building reusable components called ActiveX controls or COM (Component Object Model) objects, which can be used in various applications. By using ATL, developers can save time and effort in coding while ensuring their components are efficient and lightweight. It’s especially useful in scenarios where performance is critical, such as in web applications and services.