Saar Shechter

Wix Engineering 📌 Newsletter, Issue 78: Cutting Costs, Boosting Resilience, and Smarter AI Packed with engineering insights, developer stories, and tools to help you build better, faster, and smarter. This month, we’re diving into cost-cutting wins, platform resilience, AI-powered coding, and productivity tips. 👉Here’s what’s inside: 1. How @Wix Cut 50% of Its Data Platform Costs (Part 1) @frolovv explains how we unified multi-cloud cost data, solved tagging challenges, and built a cost model that slashed platform costs by half - without hurting performance. 2. Engineering Resilience: Behind Wix’s Global Platform Ben Chen shares how our Production State and Traffic Light systems cut MTTR by 80% and automated 60% of traffic management, ensuring seamless uptime for millions of sites. 3. Distributing Context Across Repositories In this talk, @ranyitz shows how @cursor_ai's rules and Wix’s aicm tool make AI assistants far more effective by carrying context across sessions and repos. 4. How Wix Slashed Spark Costs by 50% Almog Gelber walks through our migration of 5,000+ Spark workflows from EMR to EMR on EKS - achieving 50% lower costs, 5x faster spin-up times, and a 99% transparent transition. 5. More Insights We Liked - A roundup of great reads from Wix engineers and beyond: * Words Matter: How Prompting Shapes Accuracy, Speed, and Cost - @GoldsteinJosef on why prompt design makes or breaks #LLM performance. * Harnessing Simulation - Ori Morhaim on using simulation to optimize staffing and ticket routing in customer care. * The AI Code Velocity Trap - @schuftan on why AI-generated speed can create "day-one legacy code" and how to prevent accountability debt. * Must-Have Mac Apps in 2025 - @saar_shechter’s top productivity apps plus Reddit’s hidden gems. --- 👉 Read the full newsletter here: wix.engineering/so/90PZWubU3

First-time user or #terminal power user - no matter where you are on your journey - you’ll find this new guide very useful: medium.com/wix-engineerin…