managing contacts exchange 2010

Greetings
exchange 2010 standard
outlook 2010
activesync devices... android, iphone

I need a fresh approach and best practice on how to share contacts throughout an organization.  I need them to show on user's outlook's and their phones.

what is the best way to do this?  best practice....
i have seen a few ways... shared from one person?  managed on exchange 2010
jamesmetcalf74Asked:
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David Johnson, CD, MVPConnect With a Mentor OwnerCommented:
put the contacts into the global address list.
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