How to combine a cadastral map with my map (for example, created in the Yandex map constructor)?

Question

Programming

1. I need to take a map (I'm thinking of using the Yandex map constructor) and mark my edge into the areas I need, which will be highlighted in different translucent colors and indicated by numbers.
2. I need to take a cadastral map and make it possible to overlay my created map with a layer in order to understand in which my area a certain area from the cadastral map falls.
How to implement it? Perhaps I do not know something and you will offer a simpler option.
I do this for a company that deals with solving problems with various land plots. Many orders, difficult to navigate and want to structure the location of client sites in order to reduce the movement of surveyors. Therefore, we decided to break the map into regions, assign each site its own area and send a surveyor to one area at once to all sites. And so the manager somehow just needs to navigate when adding a new order, in which area the client’s site falls. I decided to make a hybrid card for this.
It would be nice if the map had the ability to immediately search for a plot by cadastral number.

Answer 1

Well, there is already this:
https://kadastrmap.ru/kadastr/publichnaya-kadastro...
on the right, select what to display on, like Yandex maps, Google maps, osn
If you look closely, you can see what was done, leafletjs.com