1. OS
1.1. Linux
1.2. Ubuntu
1.3. Mac
1.4. Windows Server
2. Containerization & Orchestration
2.1. Kubernetes
2.2. Docker
2.3. Management
2.3.1. Rancher
2.3.2. kOps
2.3.3. Lens
2.4. Networking
2.4.1. istio
2.4.2. Traefik
2.4.3. kiali
2.5. CICD
2.5.1. ArgoCD
2.5.2. Jenkins
2.6. Security
2.6.1. Aqua Scanner
2.6.2. Anchore
3. CI/CD
3.1. Jenkins
3.2. BitRise
3.3. TeamCity
3.4. BitBucket
3.5. Azure Pipelines
3.6. CodeMagic
3.7. CodeBuild/CodeDeploy
4. Build Tools
4.1. NPM
4.2. SBT
4.3. Maven
4.4. Gradle
4.5. MSBuild
4.6. XCode
5. IaC
5.1. Terraform
5.2. CloudFormation
5.3. ARM
5.4. Ansible
6. Monitoring
6.1. DataDog
6.2. Prometheus
6.3. Grafana
6.4. PagerDuty
6.5. Splunk
7. Scripting
7.1. Shell
7.2. Powershell
7.3. Groovy
8. Testing
8.1. SAST
8.1.1. Junit
8.1.2. Nunit
8.1.3. SonarQube
8.1.4. SonarCloud
8.2. DAST
8.2.1. Arachni
8.2.2. OWASP ZAP
8.2.3. Selenium
8.2.4. Cucumber
9. WebServers
9.1. Nginx
9.2. Tomcat
9.3. Jetty
9.4. Apache
9.5. IIS
10. Programming
10.1. Python
10.2. Java
10.3. Android
10.4. HTML/CSS/JS
11. Collaboration
11.1. JIRA
11.2. Slack
11.3. Confluence
12. Cloud
12.1. AWS
12.1.1. Compute
12.1.1.1. EC2
12.1.1.2. ElasticBeanstalk
12.1.1.3. Lambda
12.1.1.4. EKS
12.1.1.5. ECS
12.1.1.6. Fargate
12.1.2. Analysis
12.1.2.1. Athena
12.1.2.2. Redshift
12.1.3. Networking
12.1.3.1. VPC
12.1.3.2. NAT
12.1.3.3. Peering
12.1.3.4. CloudFront
12.1.3.5. Route53
12.1.3.6. Load Balancers
12.1.4. Storage
12.1.4.1. EFS
12.1.4.2. EBS
12.1.4.3. S3
12.1.5. Database
12.1.5.1. Postgres
12.1.5.2. MySQL
12.1.5.3. Elasticache
12.1.6. Management
12.1.6.1. CloudFormation
12.1.6.2. Logging & Monitoring
12.1.6.2.1. CloudWatch
12.1.6.2.2. CloudTrail
12.1.6.2.3. X-Ray
12.1.6.3. AWS Backup
12.1.6.4. Organizations
12.1.6.5. Control Tower
12.1.7. Security
12.1.7.1. IAM
12.1.7.2. Certificate Manager
12.1.7.3. KMS
12.1.7.4. Shield
12.1.7.5. WAF
12.1.8. Analytics
12.1.8.1. Redshift
12.1.8.2. Athena
12.1.8.3. Kinesis
12.1.9. Application
12.1.9.1. API Gateway
12.1.9.2. SQS
12.1.9.3. SES
12.1.9.4. SNS
12.2. GCP
12.2.1. Compute
12.2.1.1. Compute Engine
12.2.1.2. Kubernetes Engine
12.2.1.3. CloudRun
12.2.2. Storage
12.2.2.1. Cloud Storage
12.2.2.2. Persistent Disk
12.2.3. Analysis
12.2.3.1. BigQuery
12.2.3.2. Looker Studio
12.2.4. Networking
12.2.4.1. Virtual Private Cloud
12.2.4.2. CDN
12.2.4.3. GLB
12.2.5. Management
12.2.5.1. Google StackDriver
12.2.5.2. Cloud Monitoring
12.2.5.3. Logging
12.2.6. Security
12.2.6.1. Cloud IAM
12.2.6.2. Cloud Armor
12.3. Azure
12.3.1. Compute
12.3.1.1. Web Apps
12.3.1.2. Virtual Machine
12.3.1.3. AKS
12.3.1.4. Azure Functions
12.3.2. Storage
12.3.2.1. Managed Disks
12.3.2.2. Azure Blob Storage
12.3.3. Networking
12.3.3.1. Vnet
12.3.3.2. CDN
12.3.3.3. Load Balancer
12.3.4. Management
12.3.4.1. Log Analytics
12.3.5. Security
12.3.5.1. Active Directory
12.3.6. Azure DevOps
12.3.6.1. Repos
12.3.6.2. Pipelines
12.3.6.3. Releases
12.3.6.4. Artifacts