Which application software technology requires additional installation for monitoring by Dynatrace?

The choice highlighting Apigee Edge is correct because this application software technology necessitates additional installation for effective monitoring by Dynatrace. Apigee Edge is an API management platform that provides robust capabilities for designing, securing, and analyzing APIs. For Dynatrace to gather relevant metrics and data from this type of application, a specific agent or monitoring component needs to be deployed.

This requirement contrasts with other options, where monitoring might be achievable without the same level of additional installation. For instance, Microsoft Azure offers a variety of services that can be natively integrated with Dynatrace, providing easier monitoring setups. Similarly, IBM Watson and Oracle Database can often be monitored using existing integrations or configurations that do not necessitate a separate installation process, allowing for more seamless setup. This distinction highlights why Apigee Edge stands out as requiring extra steps for integration with Dynatrace.