This topic describes how to test applications and mutually call on-premises and cloud applications during the development process. The following table describes the scenarios and features involved in application testing and the interconnection between on-premises and cloud applications.

Scenario Feature References
On-premises testing and diagnostics After you configure a local registry, you can use Alibaba Cloud Toolkit to test and diagnose microservices.
On-premises development and the interconnection between on-premises and cloud applications You can use Alibaba Cloud Toolkit to start a local registry or join a custom registry in your on-premises development environment. This helps you implement mutual calling between your services and the services of others. Develop applications in an on-premises environment and implement the interconnection between on-premises and cloud applications