If you want to review the state of the corporate WAN—in light of digital transformation, the cloud, SD-WAN adoption, and MPLS utilization—there's no one better to talk to than Phil Gervasi, Director of Technical Evangelism at Kentik.

Lucky for us, he was this week's guest on TeleGeography Explains the Internet.

We covered the state of lift-and-shift into the cloud, the perseverance of MPLS, real use cases of SD-WAN, and, of course, lots on how network changes have impacted the visualization of network performance and security. (And how that needs to evolve.)