Please have look on the below mentioned link to have an idea of CPS and few
advantages of it
[url]http://kb.adobe.com/selfservice/viewContent.do?externalId=2a983ee8&sliceId=2[/url]
[url]http://kb.adobe.com/selfservice/viewContent.do?externalId=d280b23a&sliceId=2[/url]
for more information you can search in Adobe Knowledgebase.

Without CPS also you can send a draft for review and after review the
publisher can publish.