Integration Testing

Integration Testing is a phase of software testing that verifies how different modules or units of an application function when they are combined. Its purpose is to uncover defects in the interfaces and interactions between these units, ensuring they work together as a cohesive system.

Example: For a new e-commerce application, a tester would perform integration testing by combining the user authentication module with the shopping cart module. This would involve testing scenarios where a logged-in user adds an item to their cart to ensure that the user's ID is correctly passed between the modules and that the cart data is properly associated with the correct account.