A catalogue of payment processors, AI services, communication APIs, and data platforms I've integrated into production applications — with implementation notes, gotchas, and patterns.
GA4 implementation with Google Tag Manager — event schema design, custom dimensions, server-side tagging, and Data API integrations for custom dashboards.
Meta Marketing API for campaign management, Pixel for conversion tracking, Conversions API for server-side events, and WhatsApp Business API for messaging.