Description: Functional Integration Testing is a type of evaluation in software development that focuses on verifying that different components or modules of the system work together coherently and as expected. These tests are crucial to ensure that interactions between various elements of the software are not only correct but also meet the established functional requirements. Unlike unit tests, which focus on individual components, functional integration tests address the communication and collaboration between multiple parts of the system. This approach allows for the identification of issues that may arise when modules interact, such as errors in data transfer, format incompatibilities, or failures in business logic. Tests can be performed manually or automated, and typically include the creation of scenarios that simulate real software usage. The importance of these tests lies in their ability to detect failures at early stages of development, which can save time and resources in the future. Additionally, they contribute to improving software quality, ensuring that the final product not only works correctly in isolated parts but also provides a smooth and uninterrupted user experience.