The idea of enterprise resource planning (ERP) is to gather  unique data in real time about all managerial activities  happening in a company.

ERP can be defined as the set of cross organization integrated applications (software products) that covers  the business cycle of a firm (including sales, production, human resources or financial accounting).

It aims at  helping companies to better plan their activity and use their inputs and outputs more effectively.

They belong to the group of integrated systems aiming at connecting and synchronizing all the activities of all different departments of an enterprise.

ERP software and business software are not equivalent. Many businesses use some kind of software for their activities (in  accounting: AccountEdgePro 2012). ERP solutions make all of the latter unnecessary.

An example, a very good friend just told me that it is like the software of a hosting, a website or a blog: you may use joomla…