Designing a multi-tier application architecture on AWS involves considering various components and factors to ensure scalability, availability, and performance. Here are the key components and considerations for designing such an architecture:
1. VPC (Virtual Private Cloud):
A VPC is a fundamental component that provides isolated network environments in AWS. When designing a multi-tier architecture, it is recommended to create separate subnets for each tier, such as public, private, and database subnets. This segregation allows you to control access and apply different security measures based on the sensitivity of the resources.
2. Load Balancers:
Load balancers, such as AWS Elastic Load Balancer (ELB), play a crucial role in distributing traffic across multiple instances to achieve scalability and high availability. Use a load balancer at the front end to distribute incoming requests to application instances in different availability zones, ensuring even traffic distribution and handling failover scenarios.
3. Auto Scaling:
Auto Scaling enables automatic scaling of compute resources based on the demand and usage patterns of your application. By defining scaling policies and metrics, you can dynamically adjust the number of instances in each tier to handle varying traffic loads. This ....
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