Final answer:
The icons on the service health dashboard in Office 365 indicate the status of the services.
Step-by-step explanation:
The icons on the service health dashboard in Office 365 indicate the status of the services. Each icon represents a different status of the service. For example, a green checkmark indicates that the service is running normally, while a yellow exclamation mark indicates a service degradation. The icons provide a quick way to understand the current status of the Office 365 services.