AWS Overview for DevOps Engineers

Amazon Web Services (AWS) is a cloud computing platform that provides scalable, flexible, and cost-effective cloud solutions. AWS offers Infrastructure as a Service (IaaS), Platform as a Service (PaaS), and Software as a Service (SaaS) models to help organizations deploy and manage applications efficiently.

For a DevOps Engineer, AWS plays a crucial role in automating infrastructure provisioning, CI/CD, monitoring, and security.

AWS Services Commonly Used by DevOps Engineers

1. Compute & Containerization

EC2 – Virtual servers for hosting applications.
Lambda – Serverless computing.
ECS – Managed container orchestration.
EKS – Managed Kubernetes clusters.
Fargate – Serverless compute for containers.

2. CI/CD (Continuous Integration & Continuous Deployment)

CodeCommit – Fully managed Git-based repository.
CodeBuild – Builds and tests code.
CodeDeploy – Automates deployment across environments.
CodePipeline – CI/CD automation pipeline.
Jenkins on AWS – For advanced CI/CD workflows.
GitHub Actions with AWS – Automating CI/CD workflows.

3. Infrastructure as Code (IaC)

AWS CloudFormation – Automates infrastructure provisioning using templates.
Terraform – Infrastructure automation tool (popular among DevOps engineers).
AWS CDK – Define cloud infrastructure using code.

4. Networking & Security

VPC(Virtual Private Cloud) – Isolated cloud network.
Security Groups & NACLs – Controls network traffic.
IAM – Securely manage AWS users and permissions.
AWS Secrets Manager & Parameter Store – Store sensitive data securely.
AWS Shield & WAF – Protection against attacks.

5. Storage & Databases

S3 (Simple Storage Service) – Object storagefor artifacts, logs, and backups.
EBS (Elastic Block Store) – Block storage for EC2 instances.
EFS (Elastic File System) – Managed file storage.
RDS (Relational Database Service) – Managed databases like MySQL, PostgreSQL, etc.
DynamoDB – Serverless NoSQL database.

6. Monitoring & Logging

CloudWatch – Monitoring logs, metrics, and alarms.
AWS X-Ray – Tracing and debugging applications.
AWS Config – Audits AWS resource configurations.
AWS CloudTrail – Logs all API activities in AWS.
Prometheus & Grafana – For Kubernetes monitoring.

7. Message Queues & Notifications

SQS (Simple Queue Service) – Message queuing for decoupled applications.
SNS (Simple Notification Service) – Publish-subscribe messaging.
Amazon MQ – Managed RabbitMQ and ActiveMQ.

8. AWS Security & Compliance

AWS GuardDuty – Threat detection.
AWS Inspector – Security assessment.
AWS Trusted Advisor – Best practice recommendations.