Question

A company is planning to move a number of legacy applications to the AWS Cloud. The solution must be cost-effective. Which approach should the company take?

1) Lift and shift the applications to EC2 instances
2) Refactor the applications using AWS Lambda
3) Rebuild the applications using AWS Elastic Beanstalk
4) Use AWS Fargate to containerize the applications

Answer 1

A company planning to move to the AWS Cloud must evaluate its applications and decide whether to use a lift and shift approach to EC2 instances, refactor using AWS Lambda, rebuild using AWS Elastic Beanstalk, or containerize with AWS Fargate based on cost-effectiveness and suitability.

Step-by-step explanation:

The question pertains to cloud migration strategies for legacy applications to the AWS Cloud, keeping cost-effectiveness in mind. A recommended approach would depend on the specific needs and constraints of the company. However, discussing the given options briefly:

1. Lift and shift to EC2 instances might be the simplest, fastest and initially most cost-effective method if the applications have dependencies on the OS level or aren't designed for cloud-native environments.
2. Refactoring applications using AWS Lambda can make them more scalable and potentially more cost-effective in the long term due to Lambda's pay-per-use model, but it requires an investment in modification.
3. Rebuilding applications using AWS Elastic Beanstalk is a more labor-intensive approach, which might provide better optimization for the cloud but also incurs higher upfront costs and time investment.
4. Using AWS Fargate to containerize the applications can be beneficial for applications that are suitable for containerization, providing both scalability and potentially better resource utilization.

In summary, a company should evaluate its current applications' architectures, future maintainability, and the expected ROI to decide on the best approach.