This blog post -- the fourth in a series --  will discuss how smart DNS resolvers can enhance ongoing ISP and MNO network transformation efforts, such as the transition to 5G, better integration of Wi-Fi, and new network designs that optimize the edge to improve service delivery and network efficiency. \r\n Extensive publicity about the gathering and use (and misuse) of personal data by popular online services has made internet users increasingly concerned about constant inspection of their lives and trade in their personal information. As part of a broader privacy effort in late 2018, the Internet Engineering Task Force (IETF) finalized initial standards DNS over TLS (DoT) and DNS over HTTPS (DoH) to encrypt DNS traffic between clients (stub resolvers) and resolvers.  \r\n Service providers are motivated to understand these new standards and the ecosystems that surround them since they may fundamentally change the way subscribers perceive DNS and how DNS operates in provider networks.…