DevOps Intermediate

What is Containerization?

A lightweight virtualization method that packages applications with their dependencies into isolated, portable containers.

Containers package code, runtime, libraries, and settings together, ensuring applications run identically everywhere. Unlike VMs, containers share the host OS kernel, making them faster to start and more resource-efficient.

Docker is the most popular containerization platform. Container images are built from Dockerfiles, stored in registries (Docker Hub, ECR), and orchestrated by Kubernetes or Docker Swarm for production deployments.

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A structured analysis conducted after an incident to understand what happened, why, and how to prevent recurrence — without assigning blame.

A CI/CD platform integrated into GitHub that automates build, test, and deployment workflows using YAML configuration.

A communication mechanism that enables asynchronous message passing between services, decoupling producers from consumers.

An architectural style where an application is composed of small, independent services that communicate over APIs.

A human-readable data serialization language commonly used for configuration files in DevOps tools and applications.

A popular log management platform combining Elasticsearch (search), Logstash (processing), and Kibana (visualization).

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