In this text, the author discusses the implementation of a consolidated API, termed an "API Multiplexer," to efficiently manage and access multiple Dynatrace environments within a large global setup. This solution addresses the challenge of consolidating API endpoints from numerous Dynatrace environments into a single entry-point, facilitating seamless API access without the need for individual token management across tenants. The API Multiplexer employs a fan-out/fan-in approach to distribute API calls across multiple tenants, execute them in parallel, and return aggregated results, enhancing performance and scalability. The implementation, built using Go for its concurrency capabilities, includes services such as TenantManager for token management and TenantCache for storing tenant information, enabling efficient and filtered access to specific tenant data. The solution mitigates potential overload on the Dynatrace API by limiting parallel requests, ensuring robustness and high performance, which allows the author to visualize problem statuses across environments and explore further integrations and analytics.