Teaser allows the grouping of an image, title and description for promoting and linking to site content sections. One or more actions can also be defined.
All teasers use an H3 Heading per default. However, to follow the best SEO practices in some Teasers, it is necessary to use a DIV. You can change it in the Title Type:
AIDA uses Core Component Teasers in most of the variations. By default, Teaser has elements like pre-title, images, links, CTA buttons, etc. In some cases, the component doesn't use some of those elements, for example: Pre Title. Please check the design in case you add content to some field and it is not showing.