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Oliver Buchannon
Guille Ojeda

I'm a Software Architect and content creator. I've published 2 books, a bit over 100 blog posts, and I write a free newsletter called Simple AWS, with over 4000 subscribers. I've been a developer, tech lead, cloud engineer, cloud architect and AWS Authorized Instructor. I've worked with startups, SMBs and big corps. Now I'm focused on sharing that experience.

Guille Ojeda
The Essential Guide To LLM Evaluations

The Essential Guide To LLM Evaluations

Guille Ojeda
AWS Frontier Agents in Practice: Kiro, DevOps Agent, and Security Agent

AWS Frontier Agents in Practice: Kiro, DevOps Agent, and Security Agent

Guille Ojeda
DynamoDB Database Design in 2026

Databases

DynamoDB Database Design in 2026

Guille Ojeda
Partitions, Sharding, and Split-for-Heat in DynamoDB

Partitions, Sharding, and Split-for-Heat in DynamoDB

Guille Ojeda
Why DynamoDB Failed in October 2025

Architecture

+1

Why DynamoDB Failed in October 2025

Guille Ojeda
Aurora DSQL: The PostgreSQL-Compatible Database That Will Break Your App (And How to Fix It)

Aurora DSQL: The PostgreSQL-Compatible Database That Will Break Your App (And How to Fix It)

Guille Ojeda
Microservices vs. Agentic AI (Part 4): Agentic Microservices

Microservices vs. Agentic AI (Part 4): Agentic Microservices

Guille Ojeda
Microservices vs. Agentic AI (Part 3): Operations and Costs

Microservices vs. Agentic AI (Part 3): Operations and Costs

Guille Ojeda
Microservices vs. Agentic AI (Part 2): Communication, State, Patterns, and Predictability

Artificial Intelligence

+1

Microservices vs. Agentic AI (Part 2): Communication, State, Patterns, and Predictability

Guille Ojeda
Microservices vs. Agentic AI (Part 1): Decomposing Applications vs. Orchestrating Tasks

Microservices vs. Agentic AI (Part 1): Decomposing Applications vs. Orchestrating Tasks

Guille Ojeda
AWS Organizations Deep Dive part 2

AWS Organizations Deep Dive part 2

Guille Ojeda
AWS Organizations Deep Dive

Architecture

AWS Organizations Deep Dive

Guille Ojeda
Amazon Bedrock Prompt Caching

Artificial Intelligence

Amazon Bedrock Prompt Caching

Guille Ojeda
AWS Batch Reference Architecture

Architecture

+1

AWS Batch Reference Architecture

Guille Ojeda
Amazon Bedrock Deep Dive: Building and Optimizing Generative AI Workloads on AWS

Artificial Intelligence

Amazon Bedrock Deep Dive: Building and Optimizing Generative AI Workloads on AWS

Guille Ojeda
AWS Lambda's Underlying Architecture

Serverless

AWS Lambda's Underlying Architecture

Guille Ojeda
Amazon CloudFront: Optimizing Content Delivery

Networking

Amazon CloudFront: Optimizing Content Delivery

Guille Ojeda
Is Amazon Aurora Serverless Actually Serverless?

Serverless

+1

Is Amazon Aurora Serverless Actually Serverless?

Guille Ojeda
Distributed Transactions in Event-Driven Architectures

Architecture

Distributed Transactions in Event-Driven Architectures

Guille Ojeda
Event-Driven Architecture patterns

Architecture

Event-Driven Architecture patterns

Guille Ojeda
Event-Driven Architecture in AWS: Benefits and Use Cases

Architecture

Event-Driven Architecture in AWS: Benefits and Use Cases

Guille Ojeda
Event-Driven Architecture in AWS: Basic Concepts

Architecture

Event-Driven Architecture in AWS: Basic Concepts

Guille Ojeda
Should I Use ECS or EKS to Deploy Containers on AWS?

Containers

Should I Use ECS or EKS to Deploy Containers on AWS?

Guille Ojeda
AWS Batch Deep Dive

Containers

AWS Batch Deep Dive

Guille Ojeda
AWS Savings Plans and Reserved Instances

Operations

AWS Savings Plans and Reserved Instances

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