Apps
An app in Salesforce is a container for all the objects, tabs, processes, and services associated with a business function.
There are standard and custom apps that are accessed using the App menu located in the top-right corner of the Salesforce page, as shown in the following screenshot:
When users select an app from the App menu, their screen changes to present the objects associated with that app. For example, when switching from an app that contains the Campaign tab to one that does not, the Campaign tab no longer appears. This feature is applied to both standard and custom apps.
Standard apps
Salesforce provides standard apps such as Sales, Call Center, and Marketing.
Custom apps
Optionally, a custom app can include a custom logo. Both standard and custom apps consist of a name, a description, and an ordered list of tabs.
Subtab apps
A subtab app is used to specify the tabs that appear on the Chatter profile page. Subtab apps can include both default and custom tabs that you can set. This...