This article explains why fast sites matter and shows how to use Google Lighthouse and PageSpeed Insights together to audit performance, accessibility, and SEO, read scores and metrics, and act on practical recommendations; it compares their strengths, outlines a workflow (e.g., for a Black Friday e-commerce push), and shares best practices: prioritize fixes, implement lazy loading, caching and minification, and monitor regularly.
Building a robust and scalable application is only half the battle; ensuring it can withstand real-world traffic demands is crucial. Load testing helps identify performance bottlenecks, optimize infrastructure, and prevent costly failures. Essential skills include understanding system architecture, knowledge of performance metrics, and scripting automation.
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