It depends on what you need, and the mechanism you use for dependency 
management. In short,
- ManagedServiceFactory is a part of the Configuration Admin specification from 
the Compendium (section 104). It allows you to create zero or more services 
based on a configuration, in much the same way as you would configure exactly 
one service using a ManagedService.
- ComponentFactory is a part of the Declarative Services specification 
(Compendium, 112), and is used for creating instances of a service on-demand 
(see 112.2.4).

If you need to generate services 'externally', for instance, you have a service 
that discloses information based on some file system paths, you can use a 
ManagedServiceFactory: you create a configuration for each of the paths.
If you need to be able to create a service for each 'getting' of the service 
(so they don't get shared between components using the service), and you happen 
to use SCR as a dependency management mechanism, you can go with 
ComponentFactory.

So, they are not necessarily comparable. What is your use case?

Angelo

On May 20, 2010, at 8:26 PM, Tom Kesling wrote:

> Hello,
> I'm trying to understand when to use a ManagedServiceFactory vs a
> ComponentFactory.
> 
> Any advice is appreciated.
> 
> Thanks,
> T
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