Month: June 2021

What is IaaS?

IaaS In the last years, cloud computing services have become very popular. But still, while chatting with colleagues, some confusion comes around the term and the kinds of services that it involves. What is cloud computing? Shortly, cloud computing is an on-demand supply of tech resources through the Internet in exchange for a defined fee. Rephrasing,... Continue reading: What is IaaS?

DNS A record explained

DNS A record

Understanding DNS record is easy. The only thing that you need a simple explanation. We will see what a DNS record is, and we will start speaking about one of the most used ones – DNS A record. It is the simple record that connects what you are typing in your web browser and the address of the site, but let’ go in-depth. 

In the following page you can find in-depth information about the A record!

DNS and DNS records explained

We will not go into detail, but we should really define what DNS and DNS records are before we go to the topic of DNS A records. 

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Domain name system explained

Domain Name System

The time before the Domain Name System

A long, long time ago, there was no Internet! Can you believe it? Back then, there were just a few university computers and some military ones linked together through different networks. They were working together, but with a lot of connection problems. The number of the devices started to grow, so did the connection between them. 

Back then, each of the computers needed to have a hosts.txt file on their memory, which was basically a table with hosts’ names and their IP addresses. Like a table of A records, but of all possible devices that are there. 

Imagine having to administrate a massive excel table with all the sites that you want to visit and their addresses. A lot of work! 

The hosts.txt was not a viable option, so there was a need for a better system for that new thing called the World Wide Web. This is where the Domain Name System came. 

Domain Name System explained

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