Management Account
1. Primary account that creates and manages the AWS Organization.
2. Has full administrative control over the organization and all its member accounts.
3. Can create accounts, invites account to join, manages SCP and manages consolidated billing

Member Account
1. Any AWS account that is part of the organization but not the management account.
2. Used for dev, test, or production environments.
3. Can be:
• Created from within the organization
• Invited to join from outside

1. Amazon DynamoDB is a fully managed, serverless NoSQL database service in AWS cloud
2. It provides Single-digit millisecond latency.
3. Stores data in Key-value and document format

Both of them are part of systems manager
1. Fleet manager is for monitoring the set of instances.
2. Session manager is used to access individual instances without SSH or RDP

DB Type Why It's Used
Amazon DynamoDB NoSQL Ultra-low latency, scalable, serverless. Ideal for player profiles, game sessions, leaderboards.
Redis (Amazon ElastiCache) In-memory key-value store Real-time game state, matchmaking, caching.
Amazon Aurora (MySQL/PostgreSQL) Relational For persistent game metadata or billing systems.

2-tier architecture is a client-server architecture where the application is divided into two layers:

Client Tier – the user interface or frontend, typically running on a user's device (e.g., desktop app).

Data Tier – the database server that stores and manages data.