When we are building an application using a client-server architecture, first we need to build the project and then we build the other components (such as classes and pages) within that project. Therefore, the project acts as the boundary of the application. Like a programming project, an application of the Force.com platform is a logical container for all of the objects, tabs, processes, and services associated with a given business function. A Force.com custom application consists of a name, a description, an ordered list of tabs, and optionally, a custom logo and a landing page. Therefore, a Force.com application can group different tabs and objects together to form a single business requirement. Users can switch between apps using the Force.com app drop-down menu at the top-right corner of every page.

Salesforce provides standard Sales apps such as Call Center, Marketing, and Community, among others. The following screenshot indicates the standard...