OSGi has been choosed as a technology base for JOnAS 5 for the following reasons :

* OSGi enforce modularity with the Bundle concept
* OSGi provide standard mechanism for Classes isolation and versionning
* OSGi help us for remote artifacts deployment
* OSGi is lightweight
* OSGi handle dependencies issues (services inter-linking)
* OSGi have large industry support

Besides theses items, OSGi can still be used for component-like (bundles) introspection, giving us building blocks for Autonomic Computing (System cartography, ...).