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AWS Architecture

Patterns, services, and architectural decisions for building on AWS — including Bedrock, SageMaker, Transfer Family, and more.

39 articles in this series
AIMar 10, 2026

Vector Search vs Semantic Search: They're Not the Same Thing

Vector search, semantic search, keyword search, hybrid search — these terms get used interchangeably but they mean different things. This post breaks down what each actually does, when each matters, and why hybrid search wins for RAG.

12 min read
CloudMar 5, 2026

When Your Keys Get Locked In: Navigating AWS KMS Import Limitations

AWS KMS doesn't allow key material export by design. When an external PKI partner generates keys but doesn't retain them, you're stuck. Here are the four AWS alternatives — CloudHSM, XKS, Private CA, and fixing the process — with a decision framework to pick the right one.

14 min read
AIFeb 26, 2026

LLM Architecture Explained Simply: 10 Questions From Prompt to Token

A beginner-friendly walkthrough of how an LLM actually works end-to-end: from typing a prompt to receiving a response — covering tokenization, embeddings, Transformer layers, KV cache, the training loop, embeddings for search, and why decoder-only models won.

17 min read
AIFeb 23, 2026

Transformer Anatomy: Attention + FFN Demystified

A deep dive into the Transformer architecture — how attention connects tokens and why the Feed-Forward Network is the real brain of the model. Plus the key to understanding Mixture of Experts (MoE).

15 min read
AIFeb 9, 2026

RAG on AWS: Which Vector Store Is Right for You?

AWS now offers 9 different ways to store and search vectors for RAG workloads. This guide compares every option through the Well-Architected Framework to help you pick the right one.

22 min read
DevelopmentJan 26, 2026

AWS Backup Cost Analysis

EBS snapshot costs were growing month-over-month with no clear explanation or optimization strategy.

4 min read

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