When you build modern cloud-based systems, you usually realize quickly that you need to manage the access to your deployed resources. This is especially true with serverless systems, where you often end up with dozens of resources, even for medium-sized architectures. AWS offers a few services you can use to set up a central entry point to your infrastructure. Elastic Load Balancer, API Gateway, and AWS AppSync. This article will discuss AppSync, AWS’s managed GraphQL service.