Field notes for better serverless decisions.
Architecture patterns, operational trade-offs, and product decisions for teams building on AWS.
Jul 19, 2026
Use decision records to make serverless boundaries reviewable
A lightweight way to capture ownership, events, data, and access choices before they become costly assumptions.
Alejandro Santana
Jul 17, 2026
AI workflows need operating boundaries, not just model prompts
How to turn a useful generative or agentic workflow into an AWS system with constrained tools, evidence, evaluation, and human control.
Alejandro Santana
Jul 16, 2026
Review an event-driven migration before the first deploy
The questions that expose ownership, replay, cutover, and rollback risks before a migration becomes production work.
Alejandro Santana
Jul 15, 2026
Design idempotent serverless handlers from the business operation
A practical approach to duplicate delivery, stable idempotency keys, and safe retries in AWS workloads.
Alejandro Santana
Jul 14, 2026
What to measure in an event-driven system
The small set of operational signals that reveal whether asynchronous work is flowing, failing, or silently waiting.
Alejandro Santana
Jul 13, 2026
When Step Functions is the right boundary for serverless work
Use visible state, retries, timeouts, and compensation when a business process is more than a single handler.
Alejandro Santana
Jul 12, 2026
Least privilege for tools connected to AWS accounts
How to make customer account connections narrow, inspectable, and easy to revoke.
Alejandro Santana
Jul 11, 2026
Run a serverless cost review with architecture context
Look beyond a service bill to find the workload behavior, configuration, and trade-offs behind a cost change.
Alejandro Santana
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