There are two kinds of backwards compatibility: the obvious one of a version of a specification with previous versions of the same, and another one of new technologies with earlier ones. Nobody forgets about the former, because there is nothing the developers of a new version know so well as the previous version they are
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Integration with another systems
System integration is defined in engineering as the process of bringing together the component sub-systems into one system (an aggregation of subsystems cooperating so that the system is able to deliver the overarching functionality) and ensuring that the subsystems function together as a system, and in information technology as the process of linking together different computing systems and software applications physically or functionally, to act as a coordinated