I am considering move some of my domains to a company with cheaper prices.
Do I have to do anything to my SSL certificates?
Current certs are generated by certbot
from Let's Encrypt.
I have never done this before and am quite new to server-side jobs. Thanks for any kind of tips.
In general you will need to move the certificates to the new server and set them up in Apache/Nginx. For Let's encrypt it's easiest to generate the certificate again. If you will have load balancer or geoip routing you will need to have the certificate on every accessible server. The certificates are for the service running, not for domain or provider. When buying certificate
Certificates are independent from both the hosting provider and the domain registrar.