Free AWS practice exams: how to actually use them well
Most of us have wasted at least one practice exam. You sit down, blast through 65 questions, glance at the score, feel either great or terrible, and…
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AWS Certified AI Practitioner AIF C01 Study Notes
A practical revision guide for choosing AWS AI and ML services, approaches, and controls I made these notes to revise the choices the exam repeatedl…
Optimizing Kubernetes Cluster Costs: Spot Instances, Autoscaling, and Resource Quotas
Introduction & Industry Context In the competitive landscape of 2026, managing cloud infrastructure is no longer merely a system engineering con…
Prove It or Pay for It: The Real Cost of Weak Data Governance in GCC Financial Services
Data governance is a business capability rather than a compliance document. When an organisation cannot answer a regulator’s question about its own…
Tagging 8,700 exam questions with an LLM, and why the Portuguese and English versions disagreed
I'm building NaHero ( https://nahero.site ) on my own. It's a set of timed practice exams for AWS, Azure and Google Cloud certifications, in Brazili…
Amazon EKS: More Control Over the Kubernetes Control Plane
Introduction One of the main perks of Amazon EKS is that AWS manages the Kubernetes control plane for you. You do not have to operate components lik…
Kubernetes Cost Optimization: Real-World Strategies That Actually Work
September 2026 | ~15 min read The $170,000 Wake-Up Call $14,200/month on EKS with 38% average utilization. We cut it to $4,180/month — a 71% reducti…
Running a serverless AI code review agent on AWS Lambda with PR-Agent and CDK
Code reviews are an essential part of our day to day work. Their importance and way of execution have changed a bit in the GenAI era. In this post,…
What to do in such situations: Developing an app integrated with generative AI
Hello, I’m pj-corridor, an engineer. In this article, I will introduce the challenges I faced while developing an application integrated with genera…
Automated Integration Tests for the Deployed Hello World API
In Part 1 , we built our Hello World API and got it running locally. But writing code is only half the story — you also need to know it actually wor…
I Deployed My First AgentCore Harness and Asked It About Production
My first CloudOps agent gave me the right answer by refusing to answer. I asked: Is production healthy? The agent said it could not verify the curre…
Implementing RAG with Terraform using AWS S3, Bedrock KnowledgeBase, OpenSearch Serverless, IAM
Published @ AWS Builder Center In this post, we will implement a Retrieval-Augmented Generation (RAG) system on AWS using Terraform, Amazon S3, Amaz…
Beyond the LLM Call: Anatomy of a Production AI Application
The first version of an AI feature is often one endpoint: receive text → call an LLM → return output It works until it does not. A client retries af…
"One of the dumbest things" ?
An AWS CEO said companies cutting junior engineers because of AI is "short-sighted thinking dressed up as efficiency" he's heard. I agree. But not f…
Future AWS Agent Engineer? I Didn't Write the Code. Does It Count?
A few weeks ago I wrote about hitting ReAct in the coursework and having a record scratch moment, because I had already met it without knowing its n…
Beyond Static Subscriptions: How AI-Native Engine Architectures Stop E-Commerce Revenue Leakage
Beyond Static Subscriptions: How AI-Native Engine Architectures Stop E-Commerce Revenue Leakage Ask any direct-to-consumer (DTC) or brand CTO where…
Agentic AI Development with Kiro: The Hidden DevSecOps Layer — Closing the Loop
Level 300 Some time ago we created a blog showing the capabilities of AI DLC and SDD to create quick and efficient prototypes as a MVP, the results…
Earth Observation on AWS, Part 1: Stream Satellite data from Orbit to your S3 bucket
The missing piece for an end-to-end data pipeline, entirely on AWS, from space. Camping in the North Cascades growing up, stargazing was a treasured…
AWS Student Builder Group GEU: Engineering the Future Through Cloud, AI, and Innovation
"Building builders, not just learners." Technology is changing faster than ever, and cloud computing has become the backbone of today's digital worl…
Building a receipt-scanning budget tracker with Amazon Bedrock, Lambda, and DynamoDB
--- The Problem I Kept Ignoring Every week, the same small annoyance played out: I'd snap a photo of a receipt, tell myself I'd log it later, and th…
How to build a tiny 1.5B text-to-SQL model that beats a 7B
I wanted to build something with an LLM using my own hands. Not wire an API into a wrapper, but take a base model, train it, measure it, break it, a…
How to Build an AI Coding Assistant with Amazon Bedrock Claude Function Calling in Node.js
Ever wondered how to turn Claude on Bedrock into a real‑time pair programmer that can edit your code for you? In a few minutes you’ll see a complete…
I got tired of surprise AWS bills, so I open-sourced a Multi-Cloud FinOps Engine.
Let's be honest. Cloud billing is broken. If you're running an engineering team across AWS, GCP, and Azure , trying to figure out exactly what's cos…
I audited Prowler's 48 IAM checks against a linter I built, and found a real gap
A few weeks ago I was prepping for a Cloud Security Engineer interview and built a small exercise: a Python function that scans an AWS IAM policy do…
AWS Serverless Weather Data Pipeline
Building a Serverless Weather Pipeline on AWS: A Step-by-Step Walkthrough This is a build log for someone who's used AWS a bit — deployed a Lambda f…
Build a Full-Stack Music Station with OpenRouter, Amazon Bedrock, and Nuxt
Have you ever been coding and then gotten into that flow state? You know where hours pass by , and it feels to you it's only ben a few minutes? Me t…
AWS AgentCore Cloud Migration: Multi-Agent Orchestration for Infrastructure-as-Code Generation
AWS Professional Services just published production data on a multi-agent system that compresses infrastructure-as-code development from weeks to mi…
Cloud Cost Per Customer: Unit Economics Without Rebuilding Your Data Warehouse
At some point a board deck needs a number nobody has: what it costs to serve customer X. Or its sharper cousin: which ten customers have the worst g…
AWS News - S1E2
Last week we kicked off a series covering the (data/storage/network) announcements that, in my view, had the most impact. This week I'm bringing 5 m…
Agent Identity and Durable Workflows: The Two Problems MCP Can't Solve
MCP 2026-07-28 dropped sessions. The initialize handshake is gone. The Mcp-Session-Id header is gone from Streamable HTTP. Protocol version, client…