In my experience, if you don’t use Serverless Framework, you will end up writing the same functionality yourself as custom deployment scripts, which will not be

In my experience, if you don’t use Serverless Framework, you will end up writing the same functionality yourself as custom deployment scripts, which will not be as stable, extensible and well documented. There are some alternatives in the Amazon ecosystem, such as AWS SAM and AWS CDK, but they are only now approaching the maturity level of SF and don’t have the same amount of plugins for various use cases.