EA License system & Web site needed

I need a website as a EA Licensing system PROVIDER. I DO NOT want to sell my own EAs license or rent them. I want to have a website to provide service for other EA owners who want to sell their products can use my Website services.

I need to able able to edit all job results end of job, do not like any non editable part of job. Full access. 

this type of suggestions will preferred:  The system relies on server-less services such as API Gateway, Lambda, DynamoDB and other services that is offered by AWS.

I prepared an excel file to explain how it may going to looks like, but if you have experience in this, field please make a progressive step and have better suggestion.