Version Control & Collaboration (Git, GitHub, GitLab, Bitbucket)
CI/CD Automation (Jenkins, GitHub Actions, GitLab CI/CD, CircleCI, ArgoCD)
Infrastructure as Code (Terraform, Pulumi, AWS CloudFormation)
Containerization (Docker, Podman)
Container Orchestration (Kubernetes, Docker Swarm, Amazon EKS, Rancher)
Monitoring & Observability (Prometheus, Grafana, ELK Stack, Datadog, New Relic)
Secrets Management (HashiCorp Vault, AWS Secrets Manager, SOPS, Doppler)
Configuration Management (Ansible, Chef, Puppet, SaltStack)
Cloud Platforms (AWS, Azure, Google Cloud, DigitalOcean)
Virtualization & VMs (VMware, VirtualBox, KVM, Vagrant)
Log Management (ELK Stack, Loki, Fluentd, Graylog)
Service Mesh & Networking (Istio, Linkerd, Envoy)
Security & Compliance (Aqua Security, Trivy, Open Policy Agent, Falco)
Backup & Disaster Recovery (Velero, Restic, AWS Backup)
DevOps Methodologies (Agile, GitOps, DevSecOps, SRE practices)