Topic: How does Integration Testing fit into the Software

How does Integration Testing fit into the Software Development Life Cycle?

Even if a software component is successfully unit tested, in an enterprise n-tier distributed application it is of little or no value if the component cannot be successfully integrated with the rest of the application.

Once unit tested components are delivered we then integrate them together.
These “integrated” components are tested to weed out errors and bugs caused due to the integration. This is a very important step in the Software Development Life Cycle.

It is possible that different programmers developed different components.

A lot of bugs emerge during the integration step.