What does “Programmable Search Engine revenue sharing changes start April 30th, 2021” mean?

The other day I received this letter from AdSense:

Programmable Search Engine revenue sharing changes start April 30th, 2021

Beginning April 30th, 2021, we will discontinue revenue sharing on the following search engines: • The public URL - a link provided for a Google hosted public page for your engine that hosts both the search box and the search results • The Google hosted layout, in which only the search results are displayed on a Google-hosted webpage Search engines that fall into the two above categories will continue to show ads, but no revenue will be shared. What does this mean for me? • To continue sharing revenue, you’ll need to use the Search Element deployed on your own site, which will continue to allow for monetization. What should I do next? • Please review the developer site for more information.

Do you understand something? I did not understand anything, especially this text is difficult to perceive in a localized version.

The bottom line is that in the search results on your site, ads will still appear, but Google will take all the money for this ad.

“The Google hosted layout” - what is it? I suspect this is the layer on top of the site that the search results are showing, or am I wrong?

The links lead to pages with technical documentation, which does not increase the clarity of the question – does this mean that the "Search engine" blocks made in the AdSense dashboard will no longer make money for the site owners? Or does this not apply to these blocks?

Related article: Search engine ad: why nothing was found and why it doesn’t show ads

From the documentation and from the AdSense dashboard, links lead to https://cse.google.com/cse/all, sometimes to https://programmablesearchengine.google.com/cse – both show the same thing.

The string “Programmable Search Engine” from the letter and the subdomain programmablesearchengine.google.com hint that these are related things.

On the Programmable Search Engine settings tab, you can see the line “Edition - Standard with revenue sharing”.

And you can also see “Public URL” there – yeah, the first paragraph of the letter “The public URL” refers to this, that is, if you search on a page like https://cse.google.com/cse?cx=d95930401ffbc147a, then there will be advertising, but you will not be given money for it.

If you click on the “Get code” button, then the code is approximately the following:

<script async src="https://cse.google.com/cse.js?cx=d95930401ffbc147a"></script>
<div class="gcse-search"></div>

Does this apply to “The Google hosted layout, in which only the search results are displayed on a Google-hosted webpage” or not ?!

Technically, an overlay could very well be a “Google-hosted webpage”, that is, a page loaded from Google that is displayed on top of your site. Even an ordinary search block on a site, from a technical point of view, can be a page hosted on Google, which was asynchronously loaded and displayed on your site.

In general, the sent letter is a clear example of how not to make notifications, since nothing is clear from such messages anyway.

Or vice versa – this is an example of how to make a notification, if you want no one to understand anything …

After all, I managed to figure out what “Google-Hosted” is.

The search box is placed on one of your webpages. The search results are displayed on a Google-hosted webpage, which can be opened either in the same window or in a new window.

This means that the upcoming changes will not affect the Search engine blocks created in the AdSense dashboard.

So, they will no longer share the profit if:

1. Search form and results are placed on the Google page
2. The search form are placed on the site, and the search results on the Google page