AE is a phase of a system implementation in which end users and consultants sit down in front of the computer and explore the application. AE typically takes place in a training data area in which end users can perform dummy setup and processing without fear of “breaking anything.”
An ASP hosts an organization’s systems, obviating the need for the client to handle many traditional IT functions. For example, ASPs tend to apply software patches and handle system maintenance. ASPs are no longer de rigeur and have been largely replaced with SaaS organizations. See also Software as a Service.