Application Server Software

ALSO CALLED: Application Servers, Application Server, Web-based Applications Server Software, Web Application Server Software, Appservers, Web Applications Server Software, App Servers, App Server
DEFINITION: An application server is a server programin a computer in a distributed network thatprovides the business logic for an application program. The application server is frequently viewedas part of a three-tier application, consisting of a graphical user interface (GUI) server, anapplication (business logic) server, and a database and transactionserver. More descriptively, it can be viewed as dividing  … 
Definition continues below.

APPLICATION SERVER SOFTWARE DEFINITION (continued): …  an application into:A first-tier, front-end, Webbrowser-based graphical user interface, usually at a personal computer or workstationA middle-tier business logic application or set of applications, possibly on a local areanetwork or intranet serverA third-tier, back-end,database and transaction server, sometimes on a mainframe or large serverOlder, legacyapplication databases and transaction management applications are part of the back end or thirdtier. The application server is the middleman between browser-based front-ends and back-enddatabases and legacy systems.In many usages, the application …