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. Subscribe DevOps is a set of practices that combines software development (Dev) and IT operations (Ops) to shorten the systems development life cycle and provide continuous delivery with high software quality. DevOps aims to improve collaboration between development and operations teams, automate infrastructure, and increase the speed and reliability of software delivery. Popular DevOps tools include Jenkins, Ansible, and Docker.