Chapter 2
Evolution of IT Architecture
2.1 Objectives
■ To look at how architecture for IT systems have evolved
■ To learn the need for applications to support business processes effectively
■ To understand the issues with integration and the best way to support integration
■ To appreciate the functions of workflows, EAI, business rules, ERP packages, and their natural convergence
2.2 Historical Perspective on Enterprise Computing Architectures
Architecture for enterprise IT systems has been evolving over the last five decades or so. It would be worth now to take a chronological look at this evolution since this has some significance on the current state of IT system architectures in the enterprise.
Prior to the 1960s, there ...
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