How is integration with the supplier portal done?

Question

1C-Bitrix

There is a supplier who provides a server with data ( https://eway-test.elevel.ru/), there is a site on Bitrix how to connect them correctly so that data (parameters, prices, pictures, etc.) is uploaded, as I understand it there you need a script and you need to enter it somewhere. In general, I need some kind of action plan on how to do this in order to have an idea

Answer 1

The easiest way "on the forehead." Create a php file in the folder with the site, write as 1 line

<?include($_SERVER["DOCUMENT_ROOT"]."/bitrix/modules/main/include/prolog_before.php");

and below is your script, which should contact the supplier's server, get the data, and then write it all to the database using the Bitrix API.
You can run it by contacting directly through the browser to the address where this script is located.
In general, it’s better not to do this, but it will do for a start)

Answer 2

1. You take the description of a data format of the supplier. You blow. You blow. You blow.
2. You write a script.
but, IMHO, if you ask such questions, I think option 2 is suitable for you:
1. You hammer the supplier, maybe someone has already connected to him with Bitrix and there are ready-made solutions.
2. Pound the Internet in search of a ready-made script.