Quick Align

Main toolbar > Quick Align (on Align flyout)

Tools menu > Quick Align

Keyboard > Shift+A

Quick Align lets you instantly align the position of the current selection to that of a target object. If the current selection is a single object, Quick Align uses the two objects' pivots. If the current selection comprises multiple objects or sub-objects, Quick Align aligns the source's selection center with the pivot of the target object.

Procedure

To use Quick Align:

Select one or more objects or sub-objects to align.
Press Shift+A or choose Quick Align from the Tools menu or Main toolbar > Align flyout.

The mouse cursor turns into a “lightning-bolt” symbol. When positioned over an acceptable alignment target, a crosshairs symbol also appears.
Click an object to which to align the selection from step 1.

The alignment is performed.