Progressive Disclosure.

Progressive disclosure is an interaction design technique often used in human computer interaction to help maintain the focus of a user's attention by reducing clutter, confusion, and cognitive workload. This improves usability by presenting only the minimum data required for the task at hand.

Glossary: Progressive DisclosureInteraction Design FoundationJuly 19th, 2019
Design technique: Progressive DisclosureMuzliMay 2nd, 2017
Clickbait or Progressive Disclosure?The Team WJanuary 12th, 2017
The Psychologist’s View of UX DesignUX MagazineMay 19th, 2010
Progressive DisclosureNielsen Norman GroupDecember 4th, 2006