Unlike the Enterprise Edition which limits to 10 the number of custom applications -- a combination of either home grown or those built on the Salesforce AppExchange platform -- that can be plugged in to Salesforce.com, the new product will enable organizations to plug in an unlimited number of third-party or custom-built applications.

In addition, the Unlimited version will accommodate 2000 custom objects and give each user 120MB of storage, as opposed to the Enterprise Edition which has a limit of 200 custom objects and 20MB of individual storage.

Any custom object can have up to 500 custom fields, including workflow rules and business processes, according to George Hu, senior vice president of applications at Salesforce. com.

However useful the expanded scalability of the new product is, the real hook for the enterprise is the addition of a free version of Sandbox and the support and administration program being made available, according to Denis Pombriant an industry analyst with Beagle Research,

 Platinum Support and Administration gives each company using Unlimited a single point of contact. That customer service representative will be assigned only a handful of customers to support and will be on call for both support and  application administration chores, according to Hu.