Create an AWS AppSync GraphQL API endpoint in each of the Regions in scope, using DynamoDB global tables to store and replicate your workload’s data. Create an Amazon API Gateway Proxy API endpoint in each of the Regions in scope, forwarding all requests to the same Regional AppSync endpoint you previously created in each of the Regions. Create or import an SSL certificate for your domain to the ACM of each of the Regions in scope, then configure each regional API Gateway to support HTTPS requests by referencing your domain’s SSL certificate. To allow a seamless client authorization across all API endpoints, configure all your Regional AppSync endpoints to use a common authorization mechanism using either Amazon Cognito or a common AWS Lambda authorizer. Configure Amazon Route 53 to forward your domain’s requests to the Regional API Gateway endpoint with the lowest latency to the client’s location. Clients across the world can send requests for commands and queries to any Region.
