How to migrate my website to AWS

The following documents may be helpful for AWS configuration.
The following document uses the AWS Elastic Beanstalk service to create ALBs and EC2s, but you can also create them manually.
https://aws.amazon.com/jp/getting-started/hands-on/build-wordpress-website/

It is also a good idea to use AutoScaling for the EC2 portion for availability.
We recommend that you manage your WordPress content on a file server called EFS.
https://docs.aws.amazon.com/autoscaling/ec2/userguide/what-is-amazon-ec2-auto-scaling.html
https://docs.aws.amazon.com/efs/latest/ug/whatisefs.html

If you are familiar with Docker container operations, you can replace the EC2 part with a container management service called ECS.
https://docs.aws.amazon.com/AmazonECS/latest/developerguide/Welcome.html

We also recommend that you check the documentation for best practices for hosting WordPress on AWS.
https://d0.awsstatic.com/whitepapers/wordpress-best-practices-on-aws.pdf