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An online survey company operates a distributed application consisting of microservices within the AWS Cloud. These microservices are managed by an automatically scaled Amazon Elastic Container Service (ECS) cluster, which is targeted by an Application Load Balancer (ALB). The ALB serves as a custom origin for an Amazon CloudFront distribution. The company's survey includes sensitive data that must be encrypted during transmission through the application. Specifically, only the data-handling microservice should have the capability to decrypt this sensitive data. What solution will effectively meet these security requirements?