Communities are branded spaces for your employees, customers, and partners to connect. You can customize and create communities to meet your business needs, then transition seamlessly between them
read more about them in detail : http://help.salesforce.com/help/pdfs/en/salesforce_communities_implementation.pdf
communities to meet your business needs, then transition seamlessly between them
read more about them in detail : http://help.salesforce.com/help/pdfs/en/salesforce_communities_implementation.pdf