Charging stations (electric vehicle supply equipment, or EVSE) are connected to the Amazon Elastic Container Service (Amazon ECS)on AWS Fargatebehind Network Load Balancer. AWS Lambda routes outbound open charge point protocol (OCPP) messages to EVSEs and Amazon DynamoDB keeps active connections. Management microservice delivers EVSE metrics to and from Amazon CloudWatch. Amazon S3used to store EVSE logs, cold metrics, and firmware files. Amazon DynamoDBstores the registry of EVSE with credentials in encrypted form. AWS Certificate Manager manages EVSE certificates for authentication. Amazon CloudFrontserves static EVSE management web application from Amazon Simple Storage Service (Amazon S3) bucket. Amazon API Gatewayexposes backend REST API for the web application. Amazon Cognito stores Charging Point Operator’s user identities. The configuration of charging sites, balancing algorithms, and power grid capacity stored in Amazon DynamoDB. Amazon CloudWatch OCPP Connection Handler AWS Fargate Elastic Load Balancing Amazon DynamoDB AWS Lambda Charging Station (EVSE) Charging Point Operator Fleet Management Smart Meters Roaming Networks AWS Fargate Amazon DynamoDB Smart Charging AWS Fargate Amazon DynamoDB AWS Certificate Manager EVSE Registry Amazon S3 AWS Fargate Amazon DynamoDB EVSE Management Elastic Load Balancing Amazon CloudFront Amazon API Gateway Amazon Cognito Amazon S3 Web Application AWS Fargate Amazon QLDB Transaction Management and Audit 1 2 3 4 5 6 Amazon Quantum Ledger Database (Amazon QLDB)stores immutable and cryptographically verifiable log of charging transactions. 7 Application Load Balancerexposes the internal APIs of the microservices, routes requests, and balances between multip
