Data science is revolutionizing web development in 5 key ways: 1. By analyzing massive datasets, data science allows web developers to better understand user preferences and create more customized websites and experiences. 2. Machine learning and data analysis automates software updates and improvements based on insights gleaned from user data and behavior patterns online. 3. Data science is modernizing web development skills and processes by automating repetitive tasks and helping developers quickly evaluate competitor websites to design unique solutions.