You want to connect supported Azure and third-party services using a fully managed event- routing service with a publish-subscribe model that simplifies event-based app development. Which of the…

Logic Apps are used for orchestrating workflows and automating tasks, not primarily as a publish-subscribe event routing service.

Service Bus is a messaging service used for reliable message queuing and publish-subscribe capabilities, but Event Grid is specifically designed for event routing and reactive programming across a wider range of services.

Azure Event Grid is a fully managed event routing service that uses a publish-subscribe model, allowing developers to easily build event-driven architectures. It supports events from Azure services and custom sources, routing them to various handlers to simplify event-based application development.

Data Factory is an ETL (extract, transform, load) service used for data integration and orchestration, not for real-time event routing with a publish-subscribe model.