ITPEC FE Morning October 2018 Question 63

An architecture that provides business process components and their IT infrastructure as services — that is SOA (Service-Oriented Architecture).

SOA splits a system into services, each a business function with a standard interface, such as "check credit" or "register order". Business processes are built by combining these services, and a service can be reused by other systems or recombined when the business changes, instead of rebuilding a monolithic application.

Answer (c)

Why not others:

• •(a) — integrated, company-wide management of core business to use management resources effectively is ERP
• •(b) — an agreement between the ordering company and the provider on service quality is an SLA
• •(d) — drastically redesigning the organization, business rules and workflow is BPR (business process reengineering)

Key rule: SOA is about how systems are built (from reusable business services); ERP, SLA and BPR are a package, an agreement and a redesign method.

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