SharePoint is a great tool for fostering collaboration in a company.  Some common benefits are as follows:

• It allows users to quickly and efficiently share and manage information.  This can be done through document libraries or user created lists
• It can help with process management.  The program can be modified through work flows to manage regular everyday process and help ensure that all the steps are followed for a given result.
• Allows for easy access to documents and helps with version control.
• SharePoint can link to other database and become the portal to critical business information.