KNOWLEDGE GRAPH

BROWSE CONCEPTS.

Explore the core architectural pillars of modern DevOps and SRE. Filter by hub to find concepts for any technology area.

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AWS Cloud Engineering Hub

5 Concepts

AWS Compute and Auto Scaling

aws cluster

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Master EC2, Lambda, Load Balancers, and Auto Scaling Groups — the compute foundation every production AWS architecture is built on.

Topics Mapped Under Concept

API Gateway, Step Functions, and Cognito - Serverless Application Layer AWS Lambda - Serverless Functions, Triggers, and Production Patterns AWS Load Balancers - ALB, NLB, GWLB and When to Use Each Auto Scaling Groups - Dynamic Scaling for Production Workloads + 2 More

AWS DevOps, Cost, and Machine Learning

aws cluster

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Master CloudWatch, CloudTrail, CloudFormation, Cost Explorer, SageMaker, and AWS Batch — operating, automating, and optimising production AWS infrastructure.

Topics Mapped Under Concept

AWS Batch, Outposts, and Hybrid Compute - Running Jobs and Extending AWS AWS Cost Explorer, Savings Plans, and Cost Optimisation AWS Machine Learning Services - AI Without Building Models CloudFormation and SSM - Infrastructure as Code and Systems Management + 3 More

AWS Messaging, Analytics, and Containers

aws cluster

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Master SQS, SNS, Kinesis, Athena, Redshift, ECS, EKS, and Fargate — decoupling services, processing data at scale, and running containers on AWS.

Topics Mapped Under Concept

Amazon MQ and MSK - Managed Message Brokers and Kafka Athena, Glue, and the Serverless Analytics Stack ECR - Container Registry, Image Scanning, and Lifecycle Policies ECS and Fargate - Running Containers Without Managing Servers + 3 More

AWS Networking and Security

aws cluster

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Master VPC, Route 53, CloudFront, IAM, KMS, WAF, and GuardDuty — the networking and security layer that protects every AWS workload in production.

Topics Mapped Under Concept

AWS Security and Encryption - KMS, Secrets Manager, WAF, Shield, GuardDuty Amazon Route 53 - DNS Routing Policies for Production Architectures Amazon VPC - Subnets, Route Tables, Security Groups, and NAT Gateways CloudFront and Global Accelerator — CDN and Global Traffic Routing + 3 More

AWS Storage and Databases

aws cluster

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Master S3, RDS, Aurora, DynamoDB, ElastiCache, FSx, and Storage Gateway — choosing and operating the right storage for every production workload.

Topics Mapped Under Concept

AWS Database Selection Guide - Choosing the Right Database AWS Disaster Recovery - Backup Restore, Pilot Light, Warm Standby, Multi-Site Amazon DynamoDB - Serverless NoSQL at Scale Amazon EFS - Shared File Storage for Multiple Servers + 4 More

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CI/CD Hub

3 Concepts

CI/CD Fundamentals and Pipeline Design

cicd cluster

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Complete overview mapping DevOps concepts for CI/CD Fundamentals and Pipeline Design.

Topics Mapped Under Concept

Automated Testing in CI — Unit, Integration, and E2E Gates Designing Multi-Stage CI/CD Pipelines — Build, Test, Scan, and Deploy Understanding CI/CD — Pipelines, Stages, and the Delivery Lifecycle

CI/CD Tools and Platforms

cicd cluster

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Complete overview mapping DevOps concepts for CI/CD Tools and Platforms.

Topics Mapped Under Concept

Building Production CI/CD Pipelines with GitHub Actions GitLab CI/CD Pipelines — Configuration, Runners, and Environment Deployments Jenkins Declarative Pipelines — Jenkinsfile for Production Workloads

Deployment Strategies and GitOps

cicd cluster

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Complete overview mapping DevOps concepts for Deployment Strategies and GitOps.

Topics Mapped Under Concept

Blue-Green and Canary Deployments in CI/CD Pipelines DORA Metrics — Measuring and Improving CI/CD Pipeline Performance Environment Promotion — Dev to Staging to Production Pipelines GitOps with ArgoCD — Declarative Kubernetes Deployments from Git + 2 More

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DevOps Hub

1 Concept

General DevOps

devops cluster

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General foundational DevOps concepts and standards.

Topics Mapped Under Concept

IAM - Identity and Access Management

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Docker Hub

5 Concepts

Docker Compose and Multi-Container Applications

docker cluster

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Complete overview mapping DevOps concepts for Docker Compose and Multi-Container Applications.

Topics Mapped Under Concept

Docker CI/CD Pipeline — Build, Scan, Push, and Deploy with GitHub Actions Docker Compose Fundamentals — Defining Multi-Container Applications Docker Compose Health Checks and Dependency Ordering Docker Compose Production Patterns — Restart Policies, Resource Limits, and Env Config + 3 More

Docker Fundamentals and Container Lifecycle

docker cluster

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Master Docker containers from scratch - run, build, debug, and manage the full container lifecycle used on every production server at Swiggy, Razorpay, and CRED.

Topics Mapped Under Concept

Docker Resource Constraints — CPU, Memory, and cgroups Running and Managing Docker Containers — The Complete Lifecycle Understanding Docker Architecture - Daemon, Client, and Container Runtime

Docker Images and Registry Management

docker cluster

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Complete overview mapping DevOps concepts for Docker Images and Registry Management.

Topics Mapped Under Concept

Docker Image Tagging, Versioning, and Registry Management Multi-Stage Docker Builds — Smaller Images for Production Optimising Docker Image Size — Techniques and Measurement Writing Production-Grade Dockerfiles — Layers, Caching, and Best Practices

Docker Networking and Storage

docker cluster

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Complete overview mapping DevOps concepts for Docker Networking and Storage.

Topics Mapped Under Concept

Debugging Docker Containers — Logs, Exec, and Inspect Docker DNS and Service Discovery — How Containers Find Each Other Docker Networking Deep Dive — Bridge, Host, Overlay, and None

Docker Security and Production Practices

docker cluster

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Complete overview mapping DevOps concepts for Docker Security and Production Practices.

Topics Mapped Under Concept

Docker Image Security Scanning — Trivy, Snyk, and ECR Scanning Docker Production Logging — Log Drivers, Rotation, and Centralised Collection Docker Secrets Management — Avoiding Credentials in Images and Compose Files Running Docker Containers Securely — Non-Root Users and Capabilities

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Kubernetes Hub

4 Concepts

Kubernetes Networking and Traffic Management

kubernetes cluster

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Master Kubernetes networking — Services, Ingress, DNS, CNI plugins, and Network Policies that control how traffic flows inside and into your cluster.

Topics Mapped Under Concept

Configuring Ingress Controllers with NGINX for Production Traffic Configuring Kubernetes Resource Requests, Limits, and QoS Classes Debugging Kubernetes Networking with kubectl and CNI Plugins Implementing Kubernetes Deployment Strategies - Rolling, Blue-Green, and Canary + 4 More

Kubernetes Observability and Scaling

kubernetes cluster

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Monitor, troubleshoot, and auto-scale Kubernetes workloads using Prometheus, Grafana, HPA, Cluster Autoscaler, and production debugging techniques.

Topics Mapped Under Concept

Scaling Deployments with Horizontal Pod Autoscaler (HPA)Troubleshooting ImagePullBackOff and Registry Authentication Issues Troubleshooting Kubernetes Pod OOMKilled and CrashLoopBackOff Errors

Kubernetes Security and Access Control

kubernetes cluster

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Secure your Kubernetes cluster with RBAC, ServiceAccounts, Pod Security Standards, Secrets management, and network isolation best practices.

Topics Mapped Under Concept

Implementing Role-Based Access Control (RBAC) in Kubernetes Managing Kubernetes Secrets with Vault and ConfigMaps

Kubernetes Workload Management

kubernetes cluster

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Master Kubernetes workloads, pod lifecycle, autoscaling, RBAC, networking, and production-grade cluster operations used by teams at scale.

Topics Mapped Under Concept

Configuring Persistent Volumes and Storage Classes in Kubernetes Configuring Pod Disruption Budgets for Zero-Downtime Upgrades Implementing Liveness and Readiness Probes for Zero-Downtime Deploys Kubernetes Jobs and CronJobs for Batch Workloads + 2 More

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Linux Hub

4 Concepts

Linux Fundamentals and File System

linux cluster

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Complete overview mapping DevOps concepts for Linux Fundamentals and File System.

Topics Mapped Under Concept

Linux File Permissions and Ownership — chmod, chown, umask, and ACLs Linux File System and Navigation — FHS, Paths, and Essential Commands Linux Package Management — apt, yum, dnf, and Repositories Linux Users, Groups, and sudo — Access Control on Production Servers

Linux Networking and Security

linux cluster

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Complete overview mapping DevOps concepts for Linux Networking and Security.

Topics Mapped Under Concept

Configuring Linux Firewalls with iptables and ufw Configuring SSH for Secure Production Server Access Hardening Linux Servers for Production — Security Baseline Checklist Using Linux Networking Tools — ip, ss, dig, curl, and tcpdump

Linux Process and System Management

linux cluster

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Complete overview mapping DevOps concepts for Linux Process and System Management.

Topics Mapped Under Concept

Managing Linux Processes - ps, top, Signals, and the Process Lifecycle Managing Linux Services with systemd — Units, Targets, and journalctl Monitoring Linux Resources — CPU, Memory, Disk I/O, and Network Performance Scheduling Linux Tasks with Cron — crontab, Systemd Timers, and Production Patterns

Linux Shell Scripting and Automation

linux cluster

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Complete overview mapping DevOps concepts for Linux Shell Scripting and Automation.

Topics Mapped Under Concept

Configuring Linux Environment — Variables, PATH, Dotfiles, and Shell Startup Processing Text in Linux — grep, awk, sed, cut, and jq Shell Scripting for DevOps - Deployment, Health Checks, and Automation Patterns Shell Scripting for DevOps — Deployment, Health Checks, and Automation Patterns + 1 More

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Terraform Hub

4 Concepts

Terraform Fundamentals and Core Workflow

terraform cluster

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Learn Terraform from scratch - providers, resources, variables, outputs, and the plan-apply workflow that turns HCL files into real cloud infrastructure.

Topics Mapped Under Concept

Provisioning AWS Infrastructure with Terraform — VPC, EC2, S3, and RDS Terraform Data Sources — Reading Existing Infrastructure Without Managing It Terraform HCL — Variables, Outputs, Locals, and Expressions Explained Terraform Tutorial — Providers, Resources, and Your First Infrastructure

Terraform Modules and Code Organisation

terraform cluster

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Write reusable Terraform modules, use the Terraform Registry, and organise code for large teams — covering workspaces, mono-repo patterns, and Terragrunt.

Topics Mapped Under Concept

Terraform Registry — Using Community Modules and Publishing Your Own Terraform at Scale — Code Organisation, Workspaces, and Terragrunt Writing Reusable Terraform Modules — Structure, Variables, and Outputs

Terraform State and Backend Management

terraform cluster

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Master Terraform state — remote backends on S3, DynamoDB locking, drift detection, and importing existing infrastructure into Terraform management.

Topics Mapped Under Concept

Importing Existing Infrastructure into Terraform State Terraform Remote State with S3 and DynamoDB — Team-Safe Backends Terraform State — What It Is, Why It Matters, and How to Manage It

Terraform in Production — CI/CD, Secrets, and Governance

terraform cluster

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Run Terraform safely in production — automating plan and apply through GitHub Actions and Atlantis, managing secrets, detecting drift, and applying governance at scale.

Topics Mapped Under Concept

Atlantis — Pull Request Automation for Terraform Teams Terraform CI/CD — Automating Plan and Apply with GitHub Actions Terraform Drift Detection — Finding and Fixing Infrastructure That Changed