Externally developed code elements, often pre-built and readily available, are integrated into a software project to provide specific functionalities. These elements can range from simple libraries performing basic tasks, such as image processing or data validation, to complex frameworks providing architectural structures for an entire application. For example, a payment gateway offered by a financial institution, integrated into an e-commerce platform, represents this type of element.
The utilization of these ready-made assets offers significant advantages in software development. It accelerates the development lifecycle by reducing the need to write code from scratch. Furthermore, it often provides access to specialized expertise and thoroughly tested solutions, improving reliability and reducing development costs. Historically, its integration has allowed organizations to focus on core competencies, driving innovation and efficiency in the software industry.