Migrating a monolithic application to AWS

Question

A company is migrating its legacy on-premises applications to the cloud. The applications are monolithic and tightly coupled, making it challenging to scale and manage them efficiently. As a cloud architect, how would you leverage AWS compute services to modernize these applications and improve scalability, reliability, and manageability?

David · Accepted Answer

This question reads like it's from the Solution's Architect exam, but doesn't have the important details required to sufficiently answer it. I recommend reviewing the above white papers since we don't know anything about the structure. Usually you can break it down to services that authenticate users, scale with containers, store with databases and deliver with edge services. SQS is also a nice alternative to separate between areas. The biggest detail I'm looking at is the scaling and manageability of compute services. Containers would be ideal here, especially with something like Helm charts/Karpenter/Terraform(IaC).

https://karpenter.sh/

Didier_Durand · Answer

Hi,

I believe that this whitepaper is exactly what you are looking for: https://docs.aws.amazon.com/pdfs/prescriptive-guidance/latest/modernization-decomposing-monoliths/modernization-decomposing-monoliths.pdf

Best,

Didier

Sedat Salman · Answer

In addition to Didier

you can also follow these links to migrate your environment to AWS cloud 
Without providing specific information we can only provide generic writeups or references to you

Decomposing monoliths into microservices (AWS Prescriptive Guidance): Provides patterns and step-by-step guidance for breaking down monoliths.

https://docs.aws.amazon.com/prescriptive-guidance/latest/modernization-decomposing-monoliths/welcome.html

Migrating Applications from Monolithic to Microservice on AWS (APN Blog): Outlines a real-world migration case study.

https://aws.amazon.com/blogs/apn/migrating-applications-from-monolithic-to-microservice-on-aws/

AWS Migration Hub Refactor Spaces: Guidance on using the tool for incremental refactoring in a managed environment.

https://community.aws/tutorials/refactor-spaces-copilot-cli

Ramakrishna_Natarajan · Answer

Hi,

An approach to modernisation is dependent on the as-is workload complexity and the desired outcomes targeted usually supported by a business case. I would suggest you to take a look at this [prescriptive guidance](https://docs.aws.amazon.com/pdfs/prescriptive-guidance/latest/strategy-modernizing-applications/strategy-modernizing-applications.pdf) which outlines the strategy and approach to modernise applications using AWS services.

Hope this is helpful.

Thanks,
Rama

Migrating a monolithic application to AWS

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