CJ Eller

The resources in a VPC attached to a transit gateway cannot access the security groups of a different VPC that is also attached to the same transit gateway.

The seconds it takes for you to read this sentence outweighs the hours floundering at doing the opposite of what it says. All it took was a little bit of time to look into AWS documentation to find a single sentence. A single sentence that negates all of the clicking and scrolling and typing through AWS console esoterica. It's another curious case of measuring twice and cutting once, though I suppose the modern interpretation goes something like this:

Strain your eyes twice, type once.

As cheeky as it sounds, I find that in this sort of Cloud & DevOps adjacent work I am doing aligns with this method. Sure there is a lot of “action,” but usually that follows much reading, discussing, reviewing, testing. Typing once isn't just typing a single character, but making sure that you type with conviction, knowing that what you're typing is based on a strong foundation of deliberation. In a way, this practice conserves those finite keystrokes we have and makes them work towards something that much better.

Strain your eyes twice, type once.