How are you all? Today I will discuss with you
about Domain Name System . I am young and have very little experience so please excuse any mistakes.

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[Source](https://pixabay.com/photos/blockchain-globe-network-3537389/)
DNS Basics:
All computers on the Internet, from your smart phone or laptop to the servers that serve content for huge retail websites, communicate with each other using numbers.  These numbers are known as IP addresses.  When you open a web browser and go to a website, you don't have to remember and type a long number.  Instead, you can enter a domain name like example.com and still end up in the right place.
A DNS service such as Amazon Route 53 is a globally distributed service that translates human readable names such as www.example.com into numeric IP addresses such as 192.0.2.1 that computers use to connect to each other.  The Internet's DNS system works much like a phone book by managing the mapping between names and numbers.  DNS servers translate requests for names into IP addresses, controlling which servers end users reach when they type a domain name into their web browser.  These requests are called queries.

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[Source](https://pixabay.com/photos/network-keyboard-hand-blockchain-3664108/)
Types of DNS Services:
Authoritative DNS: An authoritative DNS service provides an update mechanism that developers use to manage their public DNS names.  It then answers DNS queries, translating domain names into IP addresses so computers can communicate with each other.  Authoritative DNS has ultimate authority over a domain and is responsible for providing recursive DNS server answers with IP address information.  Amazon Route 53 is an authoritative DNS system.
Recursive DNS: Clients typically do not query authoritative DNS services directly.  Instead, they usually connect to another type of DNS service that is a resolver, or a recursive DNS service.  A recursive DNS service acts like a hotel concierge: although it doesn't own any DNS records, it acts as an intermediary that can get DNS information on your behalf.  If a recursive DNS has DNS references cached or stored for a period of time, it responds to DNS queries by providing source or IP information.  If not, it passes the query to one or more authoritative DNS servers to find the information.
Today's discussion ends here.  I hope you find it interesting and able to understand.  Share your thoughts on today's topic.  Wishes and blessings to all.