# AWS Technical Essencials - Key Concepts

## Global Infrastructure
- Region
- Availability Zone
- Edge Location

## EC2
- AMI
- Lifecycle
- Instance Family
- Metadata
- UserData
- Purchasing Options
- On-Demand
- Reserved
- Scheduled
- Spot
- Dedicated Instance
- Dedicated Hosts

## VPC
- Subnet
- Private
- Public
- Security
- Security Group
- NACL
- Key Pairs
- VPN Connectivity option

## S3
- Bucket
- Object
- Versioning
- Storage Class
- S3 Standard
- S3 Standard – IA
- S3 Glacier

## EBS
- Lifecycle
- Volume Type: SSD/HDD
- Scope
- vs. Instance Storage

## IAM
- Shared Responsibility Model
- Authentication
- Management Console
- AWS CLI or SDK API
- Group
- User
- Policy
- Role
- Instance Profile
- assumeRole
- STS
- CloudTrail

## RDS
- Backup
- Automatic Backup
- Manual Snapshot
- Cross-Region Snapshot
- Security
- SSL
- Encryption
- Multi-AZ Deployment
- Provisioned IOPS

## DynamoDB
- Primary Key: Partition Key
- Complex Primary Key: Partition Key + Sort Key
- Provisioned Throughput

## ELB
- Classic Load Balancer
- Application Load Balancer
- Network Load Balancer

## CloudWatch
- Auto Scaling
- Launch Configuration
- Auto Scaling Group
- Min
- Max
- Desired

## Trusted Advisor
- Cost
- Security
- Fault Tolerance
- Performance
- Service Limit