Building MOC-Compliant Event APIs for Saudi Arabia: QR, WhatsApp & Real-Time Analytics

A developer shares code patterns for building event platforms compliant with Saudi Arabia's Ministry of Commerce rules, including Arabic-first UI, local data hosting, and VAT breakdowns. WhatsApp integration achieved 93% open rates and 40% fewer no-shows. Redis Streams and server-sent events handled 200K+ concurrent users at Riyadh Season venues.