Byju's is an Indian educational technology company that provides online video-based learning programs. It uses a freemium business model and has experienced rapid growth and revenue increases. Byju's strategically uses data by collecting information on how students engage with educational videos to improve content. It also uses data science techniques like behavioral analytics and association analysis to provide personalized learning experiences and tackle challenges in the education sector like standardization. Data allows Byju's to track student perception, predict engagement, evaluate content tagging, and take actions like feedback and customized learning paths. This individualization has improved the learning experience through adoption of data science.