The rapid spread of COVID-19 has caused massive, enduring shifts in business operations. The pandemic has fundamentally transformed business operations, IT management and security for organizations of all types and sizes across the world. Enterprise network usage and requirements are dramatically different today compared to just one year ago. How exactly has the global health crisis impacted the modern WAN? What are the challenges? Let us explore these questions and examine the best practices network managers and engineers should consider when looking to adapt to a post-COVID world.