Salesforce.com is a CRM package as well as a Platform as a Service (PaaS). PaaS means the Salesforce platform can be used to build custom applications apart from a CRM. Salesforce.com is a SaaS plus PaaS. Software as a Service (SaaS) is used because of its ability to provide an out-of-the-box ruleset to manage CRM core functionalities, and PaaS is used because of the platform that can be used t…