This document discusses big data on the cloud. It notes that the internet enables vast amounts of data to be gathered from both humans and sensors. The cloud allows for this large, fast-moving data to be easily collected and analyzed at scale. Popular cloud platforms like Google Cloud and Amazon Web Services provide tools and services for computation, storage, databases, and analysis of big data. While security, data movement limitations, and learning costs present challenges, the cloud is well-suited for big data applications, especially for startups, experimental projects, and when data is already cloud-based. Big data and cloud computing will continue advancing to enable better understanding through large-scale data analysis.