While an infrastructure can, in theory, have any number of tiers, by far the most common pattern is the 3-tier infrastructure. 

This article describes:

Simplifying AWS Global Connectivity with Transit Gateways

Now that most have recovered from the hangover of the PetyaWrap ransomware attacks, it is Monday morning quarterback time. PetyaWrap was not a new ransomware with a zero day vulnerability, but rather a combination of three common vectors of attack that companies do not always take seriously. But securing your assets go beyond just your servers (aka EC2 instances); you also need to ensure your AWS Account is equally as secure.

Since this blog post was initially published, AWS has released new features available in the 3-tier infrastructure. Read the updated version here.

As part of the AWS Best Practices series of posts we will talk about various topics from migration to tagging to security. Here we will discuss the 3-tier architecture pattern.