How to install Node.JS Express?

There are several ways:

• node on ec2 https://docs.aws.amazon.com/sdk-for-javascript/v2/developer-guide/setting-up-node-on-ec2-instance.html
• dockerize ot to deploy to ECS https://aws.amazon.com/getting-started/hands-on/deploy-docker-containers/
• dockerize it on elastic beanstalk: https://docs.aws.amazon.com/elasticbeanstalk/latest/dg/create_deploy_docker.html
• dickerize with amplify studio https://docs.aws.amazon.com/amplify/latest/userguide/deploy-express-server.html

In general is good idea to dockerize your app