Chapter 18, Problem 18.1E

Explanation of Solution

Distinctions between Services and software components:

Some of the critical distinctions between services and software components are represented in the below table:

Services	Software Components
Services should be independent and loosely coupled.	Software components should not be independent and loosely coupled.
The interface of services is a “provides” interface that allows accesses to the service functionality. However services do not have a “requires” interface as services are intended to be independent and usable in different context.	Software components have two related interfaces- “provides” interface and “requires” interface.
Services communicate by exchanging messages, expressed in XML, and these messages are distributed using standard messaging transport protocols such as http and TCP/IP.	Software components can be independently deployed and composed without modification.
As there is a single strand of services against several competing standards of components, service inter-operability is much better than components.	As there are several competing standards of components against a single strand of services against, components inter-operability is much poorer than services.