Internal-only services in Dynatrace are called by which of the following?

Internal-only services in Dynatrace are typically called by other monitored technologies. This means that these services communicate with other components or services within the monitored environment that are also being tracked by Dynatrace.

In a cloud or microservices architecture, it's essential for internal services to interact with each other for processes to function correctly, and Dynatrace is designed to monitor these interactions, allowing performance data to be gathered and analyzed for troubleshooting and optimization. This capability enhances observability, ensuring that internal services maintain efficient performance and reliability.

The other options do not represent the correct scenario: external applications would interact with services available to the public, unmonitored hosts refer to systems that are not being tracked by Dynatrace, and public APIs would typically involve interactions that are meant for external use rather than internal service communication. Thus, the focus on communication between monitored technologies aligns perfectly with how Dynatrace manages internal service interactions.