The People Also Ask feature is a series of such dynamically loading questions that are actually related to the first searched query that shows in the search results on the desktop and mobile. When a particular user would be clicking on the question in that PAA feature, a drop-down would appear on such featured snippets that are actually called quick answers from a different search result.
For many PAA results, every time that the user would be clicking such extra PAA question, the new dynamically loading question would then be shown below. Also, there have also been some instances of a lot of PAAs but there are more that stop after a series of new questions. Such PAA feature first showed in the search results in the summer time of 2015. Be aware that the organic search feature is essentially a part of the ongoing efforts of Google to be able to improve such search experience as well as to keep the searches in such Google interface much longer.
Compared to the featured snippets, People Also Ask feature now moves around the first page of the SERPs. However, a lot of the PAAs showed below on the first SERP.
What you must know is that the People Also Ask feature has really grown in popularity at the time that Google first debuted this in 2015. You should learn that the PAA is actually one of the fastest growing search result page features and is also much faster even those featured snippets also called the quick answers.
What you have to know is that the PAAs show in seventy percent of all those search results with such featured snippet and show to be using the same source to answer the featured snippets as well as PAA questions. Such actually means that ranking the answer to that featured snippet as well as PAA question may result in many instances of exposure. An info that you must know is that one PAA may show up in more than 20 search result pages.
When you would try ranking like the answer in the People Also Ask question, then you must optimize similar to how you would for such featured snippet. It is really essential that you answer the question in that concise, clear, authoritative manner. With the question or answer approaching to the content would have a better user experience by making sure that the user intent is aligned with the content.
It would be great that you go through the website so that you will be able to get more info on the benefits of Google expanding the People Also Ask feature. With this, you can learn more on how you can benefit using the PAA.