You are developing a sales application composed of multiple Azure cloud services that handle orders, billing, payments, inventory, and shipping. The services must exchange transaction information asynchronously using XML messages. Which messaging solution should you recommend?

Azure Service Bus is the correct choice because it is a fully managed enterprise integration message broker that reliably delivers messages between applications and services. It supports asynchronous messaging patterns and can handle XML messages, making it ideal for the transactional exchange of information between the various sales application services. Azure Notification Hubs is designed for sending push notifications to a large number of users, not for inter-service communication of transactional data. Azure Data Lake is a scalable data storage and analytics service, not a messaging solution. Azure Blob Storage is object storage for unstructured data, not a message queue for asynchronous communication.