What B2A (Business-to-Anyone) is

An acronym created to make fun of all the business acronyms being developed.

The meaning of B2E (Business-to-Employee)

An acronym for a portal that serves as a centralized starting point for everyone within a company or organization. B2E uses the Web to centralize a wide range of applications, services, content, and tools, and it allows employees to personalize these offerings in ways that make sense to them. Unlike an intranet, which is usually based on a top-down view of what's happening in the organization, a B2E interface can be customized by the employees, based on the services they use. That way, it can become the primary vehicle by which people do their work. Corporations may develop their own B2Es or may rely on one of the many B2E portal developers.