It's a good question. And one all leaders in network engineering should be asking. Cumulus in the Cloud offers a free, personal, virtual data center that provides a low-effort way to learn about the latest open, web-scale technologies that can help you improve network designs and operations. Your virtual data center consists of two racks with two dual-homed servers connected with a leaf-spine network. The infrastructure can be personalized with Kubernetes or OpenStack as well as left unconfigured as a "blank slate".
You can access your data center via web browser to: