Author: Kishore Kandepu

WebLogic Server is a Java-based application server, and it provides a platform for deploying and managing distributed applications and services. It is a part of the Oracle Fusion Middleware family of products and is designed to support large-scale, mission-critical applications.

WebLogic Server provides a Security Framework that includes a default Security Provider, which provides authentication, authorization, and auditing services to protect resources such as applications, EJBs, and web services. However, you can also use security plug-ins or custom security providers to extend the security framework to meet your specific security requirements. Here is a brief explanation of the security plug-ins and custom security providers in WebLogic Server:

WebSphere is a powerful application server that can be configured and managed using a hierarchical structure of cells, clusters, and nodes. Understanding these concepts is essential for deploying, managing, and scaling WebSphere-based applications.

A WebSphere cell is a logical grouping of one or more application servers that share a common administrative domain. Each cell has a unique name and is managed by a single administrative console. A cell can contain multiple clusters and nodes.

Multi-tiered architecture is an architectural pattern that divides an application into separate logical layers or tiers, each with a distinct responsibility and function. The layers typically include a presentation layer (or user interface), an application layer, and a data storage layer.

The presentation layer is responsible for presenting data to the user and receiving input from the user. This layer often includes web or mobile interfaces, and it communicates with the application layer to retrieve or submit data.