DockerSoftware that packages applications into containers — became the default way to ship and deploy services. images bundle an app and its dependencies; `docker run` starts containers identically on laptops, CI, and cloud VMs. It standardized 'build once, run anywhere' for microservicesAn architecture splitting applications into small independent services — each deployed and scaled separately. and dev environments. KubernetesAn orchestration system for containers — schedules, scales, and manages fleets of services in production. later orchestrated DockerSoftware that packages applications into containers — became the default way to ship and deploy services. containers at fleet scale.

DockerSoftware that packages applications into containers — became the default way to ship and deploy services. made Linux containers usable for everyday developers, not just kernelThe core of an operating system that manages hardware, memory, and processes — everything else depends on it. experts.

It launched the cloud-native era — images, registries, and compose files became universal DevOpsPractices combining software development and IT operations — automation, CI/CD, and faster releases. vocabulary.