How to connect Sberbank Internet acquiring to an ASP MVC site?

Question

ASP.NET

Since I had not encountered this before, it became necessary to connect online payment to the site, the choice seemed to fall on Sberbank Internet acquiring. Do I need to purchase an SSL certificate? If you have any tips on connecting or examples I will be grateful!

Answer 1

do not answer in a nutshell, SSL is not always needed, but at least letsencrypt is required everywhere
the rest does not make sense until Sber gave you the go-ahead