How to share data from a web application?

Question

I have the following problem, I have an application made in (HTML, CSS JS, Jquey) another application is in Reactjs, in this first application it is hosted and in a different domain for example https://exemplo-a.com.br/ and the other is in https://exemplo-b.amazonaws.com, locally a test was made passing the data through cookies and it worked, but searching we saw that it is not possible to share data between different domains in cookies, there is some other way to solve this problem of sharing ?

Answer 1

I believe that the ideal is to use/create a database on one server, to manipulate this information and with an API you store the information you capture on one domain and request this information on the other domain. I believe this is the best alteration, especially if the data that needs to be manipulated is sensitive.