Devops:
- automation/provisioning: Puppet, Ansible, Terraform, Packer, ...
- containers: Docker, Swarm, Kubernetes, Mesos, ....
- monitoring: infra, log (ELK), app, performance, ...
- cloud: AWS, GCP, DO, ...
- serverless: lambda, Google App engine, ...
- CI: jenkins, circleci, travis, ...
- infra: LB, CDN, HA, ...
- bash, python, golang, ....
- git