This functionality was first released in July 2019. It has a huge potential – it allows you to create Adaptive Card and then put inside placeholders, that will be replaced as the card is being generated with the actual data. Thanks to it you don’t need to hardcode any values inside a card, you make more dynamic content. And save time.
It took me a little more time than I was expecting, but here it is! The post you are now reading is the last part of the 4-parts series of posts dedicated to Microsoft Adaptive Cards. Information in this post is valid for the September 2019. Because this technology is continuously changing, the knowledge from this post may in some parts get outdated, however I will do my best to update it accordingly.