What are Amazon Web Services Availability Zones?
You know what a Amazon Web Services Region is? Look closer.
How to ping if you've never pinged before
An introduction to using ping and interpreting the results.
What are Amazon Web Services Regions?
What are Amazon Web Services Regions, and how do you deploy to them?
What's the difference between public and private IPv4 addresses?
What if you don't want everything on your network to be addressable on the public Internet?
What's SQL injection, and why should Starfleet care?
The USS Discovery was compromised by SQL injection. What's SQL injection, then?
What's a subnet?
Let's go back to the hotel analogy and look what what subnets are, and how they can reduce network congestion.
IP addresses and CIDR blocks, basically
An introduction to IP addresses and CIDR blocks, with hotel rooms and binary numbers.
What are VPCs?
If you've ever used Amazon Web Services then you've probably seen one already -- but what is a VPC?
Authentication vs Authorisation
What's the difference between authorisation and authentication? Does it really matter? (SPOILER: Yes, it does.)