A call to action (CTA) chunk may be added to bring attention to an important link, such as at the end of a page, prompting users to take action.
A CTA chunk looks like a button, but while an individual button can be added anywhere, the CTA chunk is intended for use when adding up to three buttons for the most important actions a reader can take.
The difference between a button and a call to action chunk is the style. Visit the buttons page to learn how to create one.
Buttons:
Call to Action chunks: