Site speed is crucial for ecommerce success, with optimal scores above 70 for performance. Tools like Google’s diagnostic features and Shopify dashboards can help identify issues affecting website speed, such as third-party integrations and media sizes. Implementing these tips can enhance user experience and potentially increase sales.

Developers spend a significant amount of their time trying to understand systems, with recent studies indicating that comprehension and navigation account for over 80% of their efforts. To optimize this time, the article suggests reframing the discussion around "figuring out" the system and advocates for moldable development, which emphasizes creating custom tools to enhance understanding and decision-making. The Glamorous Toolkit is introduced as a practical solution to facilitate this shift.