How to customize the Kanban card template?

To choose what fields will appear on your Kanban cards, edit your Card Template from board Settings:

From among the selection of default and custom fields, choose those that you want to use, and save your changes.

When editing the Default template, you are selecting the base template for all your cards. You can also assign other, more limited templates to specific card types (colors).

Note that each of the in-card fields supports a limited number of characters.