Oracle's Internet Application Server iAS is a standards based J2EE application server that can be used to deploy applications. It is commonly used to deploy Java applications, but can also be used to deploy PL/SQL applications (mod_plsql), Oracle Forms, Reports and Discoverer workbooks.
iAS components can be divided into Infrastructure and middle tiers components:
iAS is made available in several editions:
- Enterprise Edition
- Standard Edition
- Standard Edition One
- Java Edition
 Infrastructure Components
Infrastructure components provide back-end services for the middle tiers components.
 Metadata Repository
Set of supporting schemas installed into an Oracle database.
 Oracle Internet Directory (OID)
 Management Server
Server providing the management web-site from where components can be monitored, stopped and started.
 Single Sign-on (SSO)
SSO provides the ability for a user to authenticate once, combined with strong authentication occurring transparently in subsequent connections to other databases or applications. Single sign-on lets a user access multiple accounts and applications with a single password, entered during a single connection. Single password, single authentication.
 Delegated Administration Services (DAS)
A set of pre-defined services for performing directory operations on behalf of a user. Oracle Internet Directory Self-Service Console makes it easier to develop and deploy administration solutions for both Oracle and third-party applications that use the Oracle Internet Directory.
 Middle Tier Components
 OC4J and Webcache
Webcache is a HTTP page caching engine - used to reduce load on the database and OC4J engines.
 Portal and Wireless
Framework that provides a personalized, single point of interaction with Web-based applications and information relevant to individual users or class of users. Portals built using Oracle Portal are made up of pages managed within page groups, containing portlets and items.
 Business Intelligence and Forms
Business Intelligence and Forms provides the runtime platform required for deploying Forms, Reports and Discoverer workbooks. The following components are installed:
- Oracle Forms Server
- Oracle Reports Server
- Oracle Discoverer (includes Discoverer Plus, Discoverer Viewer, and Discoverer Portlet Provider)