The holiday season is approaching, and online retailers must ensure their web and mobile properties are optimized for performance and uptime to maximize sales. To achieve this, businesses should set baselines and define success metrics, plan well in advance, know the current state of their environment, classify issues by business impact, set up a command center, be aware of changes, stay focused on the big picture, monitor golden journeys, optimize payment processes, and remain flexible. By implementing these best practices, retailers can ensure a successful Black Friday and Cyber Monday, as well as a strong holiday season overall.