About System Integration
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This article describe about System Integration (SI), which is the process of creating a complex information system that may include designing or building a customized architecture or application, integrating it with new or existing hardware, packaged and custom software, and communications. Most enterprises rely on an external contractor for program management of most or all phases of system development. It is an IT or engineering process or phase, which concerned with joining different subsystems or components as one large system. SI is also used to add value to a system through new functionalities provided by connecting functions of different systems.

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