Continuous integration (CI) is the practice of continuously building and testing code changes as they are made, to catch and fix problems early in the development cycle. CI is an essential part of DevOps and agile software development. Popular CI tools include Jenkins, Travis CI, and CircleCI. See our pricing Big data refers to extremely large and complex datasets that cannot be processed by traditional data processing applications. Big data is used in many applications, such as predictive analytics, business intelligence, and scientific research. Popular big data platforms include Hadoop, Spark, and Cassandra.