The text discusses various capabilities of a service mesh for debugging and mitigating app failures, including status checks, service proxy status checks, request logging, and injecting a debug container or using the Telepresence Tool. Service mesh status checks provide insights into the health and configuration of the service mesh components, while service proxy status checks examine the validity and functionality of individual data plane proxies. Request logging provides detailed information about requests and responses, and service route metrics offer measurements of how each service route within the mesh is performing. The text also covers configuring routes to mitigate issues, injecting a debug container for closer inspection, and using the Telepresence Tool as an alternative or complementary debugging method.