DNS propagation is considered the time period needed for the updated DNS records to be refreshed entirely over every web server.
Unfortunately, changes don’t happen immediately. The reason for that is because nameservers keep the DNS data in their cache memory for a particular amount of time until they check for modifications in the information and refresh. Therefore, you have to make sure that you have planned the DNS record modifications for your domain name well. That way, you won’t notice any downtime. So, let’s explain a little bit more about DNS propagation and how it works!