Building a Second Brain for AWS Certification with Obsidian and AI

Fri, 12 Jun 2026 00:00:00 +0000

When I started seriously preparing for AWS certifications, I hit a familiar problem for anyone working in infrastructure: the volume of information isn’t the hard part — retention and structure are.

You can watch hours of training, build labs, and take pages of notes, but unless that information is continuously refined, it decays quickly. A few weeks later, the details blur: IAM evaluation logic, VPC routing behavior, the subtle differences between endpoint types — all of it starts to fade.

ChatGPT on David Cajio

Building a Second Brain for AWS Certification with Obsidian and AI