What is SOA
Architectural Style
Business Alignment
Reduced assumptions (loose coupling)
Builds on ideas from component software, distributed objects, and MOM
Message based communication
A service is a program you interact with via message exchanges
-Services are built to last
-Encompass a business perspective
-Stability and robustness are critical
A system is a set of deployed services cooperating in a given task
-Systems are built to change
-Adapt to new services after deployment
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