The following topics describe the application server evolution, its place in SOA with an introduction to the WSO2 Application Server. Table of Contents maxLevel 3 minLevel 3
...
An Application Server (AS) is a software program which accommodates the hosting, deployment and management of various applications. Residing . It is released under Apache Software License Version 2.0, one of the most business-friendly licenses available today. Residing in the middle tier, between an organization’s database layer and the user-interaction layer, an application server facilitates communication and connection of the front and back tiers.
...