Although there are hundreds of AWS best practices that we could discuss, the following are some of the most important ones.
One of the most important aspects of a hybrid cloud application is that it should not be tied with a particular cloud. In other words, the application should have the ability to be easily migrated from one cloud to another. For example, if your application uses the AWS API Gateway, Lambda, S3, and Aurora DB extensively, and if in the future the application requires using object storage of some other cloud, some rewriting of the application code might be required. This will also get you locked to a particular cloud ecosystem and make it extremely difficult to move your application to any other cloud provider.
To avoid this, the hybrid cloud application must be developed using abstract APIs, which are wrappers around the actual cloud APIs. The cloud to be used underneath must be configurable. The application must...