What is a search layout?
Search layouts determines which fields are displayed and in what order for various search results.
Note: Search layouts are configured for each object, and are configured org-wide.
What are the different types of search layouts?
The search results layout determines which fields are displayed when you search for records of a particular type.
Lookup dialogs can be opened when associating one record to another record. For instance, a lookup dialog is displayed when you create or edit a contact and search for an account to relate that contact to.
Lookup Phone Dialogs:
Lookup phone dialogs are essentially the same as lookup dialogs, but are used within the SoftPhone dial (CTI integration).
Tab Home Page:
The tab home page layout determines which fields are displayed in the Recent Records list on an object’s home page.
List View Buttons:
List View Buttons determine which buttons are displayed on list views for that object (e.g. Add to Campaign below).
Search Filter Results:
When fields are added to the search filter results list, users can then filter search results by fields in the displayed list. For instance, if I searched for CertifiedOnDemand.com and then got a list of accounts back, I could then filter by the term “Parent” in account name (after I added account name to the list of filter result fields).