Blog
Portfolio of Isaias Santos, a Solution Architect specializing in distributed systems and AI-enabled platforms — commerce, ERP and cloud-native platforms on AWS.
Core Web Vitals Update: CrUX vs. PageSpeed Insights (PSI)
CrUX shows how real Chrome users experience your site; PSI adds Lighthouse lab data to diagnose it. Plus the October 2026 experimental soft-navigation metrics for SPA transitions.
- core-web-vitals
- performance
- crux
- pagespeed-insights
- nextjs
- seo
How AI Agents Are Reshaping the Web
From chat assistants to autonomous browsers, AI agents are turning the web into an API you can negotiate with. Here is what that means for the sites you build.
- ai
- agents
- webmcp
- automation
LLM Discoverability: SEO for the Age of AI
If ChatGPT, Claude, and Perplexity are the new search engines, the old SEO playbook needs updating. Here is what to add to your site and what to stop relying on.
- seo
- llm
- llms-txt
- ai
- discoverability
Headless CMS + AI: Content Pipelines for Agents
A practical look at using a headless CMS like Contentful as the source of truth for both human-facing pages and AI-generated content workflows.
- contentful
- headless-cms
- ai
- markdown
- content-pipelines
System Design for Checkout (Commercetools) — A Guide for Developers
What a production-grade checkout on Commercetools with Stripe or Braintree needs: idempotency, minimal PCI scope, immutable records, correct money storage, and webhook-driven payment events.
- system-design
- commercetools
- checkout
- payments
- security
- node