What is Containerization?

This episode of Techsplainers introduces containerization, the revolutionary technology that's transforming how applications are built, deployed, and run across environments. Host Derek Robertson explains how containers package everything an application needs – code, runtime, libraries, and settings – into standardized, isolated units that can run consistently anywhere. We explore how containerization differs from traditional virtualization, with containers sharing the host's operating system kernel while maintaining isolation. The episode covers key ecosystem components like Docker, container images, registries, and orchestrators like Kubernetes, while highlighting major benefits including consistency, efficiency, portability, scalability, and isolation. We also discuss important considerations around container security, data persistence, and how organizations are using containerization to modernize legacy applications, streamline development workflows, and build cloud-native services that can run anywhere. Find more information at https://www.ibm.com/think/topics/containerization Find more episodes at https://www.ibm.biz/techsplainers-podcast Narrated by Derek Robertson