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aws certification and training

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Joined: 25 Sep 23

aws certification and training

Basic Architectural Principles of Building in the AWS Cloud
Building applications in the AWS cloud requires understanding core architectural principles that ensure scalability, reliability, and cost-effectiveness. Here are the key principles:

1. Scalability
Horizontal Scaling (Scale-Out):

Add more instances to handle an increase in load.
Use services like EC2 Auto Scaling to automatically add or remove instances based on demand.
Vertical Scaling (Scale-Up):

Increase the size of an instance by adding more CPU, memory, etc.
Easier to implement but limited by the maximum instance size available.

2. Elasticity

Auto Scaling: Automatically scale your compute capacity up or down based on conditions you define.
Elastic Load Balancing (ELB): Distribute incoming traffic across multiple targets, such as EC2 instances, to ensure even load distribution and fault tolerance.

3. High Availability
Multi-AZ Deployments: Deploy applications across multiple Availability Zones (AZs) to ensure redundancy and failover.
Health Checks: Implement health checks and automatic failover mechanisms to detect and recover from failures.

4. Fault Tolerance
Redundancy: Duplicate critical components across different AZs or regions to prevent single points of failure.
Failover Strategies: Use services like Route 53 for DNS failover, and RDS Multi-AZ for database failover.
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