Studying services - OSGi in Action - page 153

OSG i services use a publish-find-bind model.

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OSG i services are truly dynamic and can appear or disappear at any time.

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The easiest and safest approach is to use the OSG i ServiceTracker utility class.

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For higher-level service abstractions, consider the component models in chap-
ters 11 and 12.

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OSG i services build on and interact with the previous module and lifecycle layers.

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OSG i defines core framework services and additional compendium services.

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Services aren't limited to distributed or remote applications. There's a huge benefit to
applying a service-oriented design to a purely local, single- JVM application, and we
hope you get the opportunity to experience this in your next project.