The DNS system consists of name servers and resolvers. Computers organized as name servers hold IP address information corresponding to domain names. The resolvers are DNS clients. DNS clients hold the addresses of the DNS server or servers.
DNS records are very important. Using the right provider directly affects the speed of your site. When a DNS client wants to find the IP address of a computer by name, it contacts the name server. The name server, the DNS server, sends the corresponding IP address to the client if it has such a name in its database. When DNS resolution is slow, your website will be slow to open, even if your server is extremely good.
Websites usually reach consumers from a single server in a specific location in the country where they operate. For platforms that want to expand to the international market, it is almost mandatory to get CDN service. The purpose of CDN is to deliver content to end users with high performance without interruption. It is important to provide performant streaming regardless of your server speed.