The Contoso SharePoint on-premise intranet portal stores content in 50 site collections.
Contoso must display all content tagged with a metadata term on the main page of the portal.
You need to display all documents with the metadata term without using any custom code.
Which technology should you use?

A.
Content Query Web Part (CQWP)

B.
Content Search Web Part (CSWP)

C.
TaxonomySession

D.
CamlQuery

Explanation:
CSWP can be configured to “see” items anywhere in SharePoint.
Incorrect:
Not A: CQWP and related SPSiteDataQuery can only search within the current site collection.
Not C: For TaxonomySession you would have to write code. Not D: The CamlQuery class just specifies a query
on a list.
Using the Content Search web part (and understanding SP2013 search)