[CentOS] Enterprise company using CentOS

Hi all

We are about to create a business case for migrate RHEL to CentOS for all or
a subset of our RHEL holdings. I have two questions that I hope to get help
answering.
1. I want to get in touch with a company that have done this journey on an
Enterprise company.
2. Suggestion/recommendation of vendors that can provide support for CentOs.

Scop:
North Europe
Number of RHEL +8.000
Support 24x7

Thanks
//mats