From iA wiki
A good example is the integration of electrical components on the processor achieved steady progress. Another is an integration engineer who might have to design modular, reusable and extensible architecture according to a technical specification.
Integration can come about from a modification or an adoption of common technology, for example, a database that allows for more efficient data and information management. An integrated system allows for the taking data from one software application and, without user intervention, translation, reformatting or replication and then using it as input into a separate application.