Coherent pluggables such as 400ZR, 400G ZR+, and 800ZR/ZR+ are starting to blur the traditional line between IP routers and DWDM systems. That opens the door to a much simpler network model: remove transponder layers, drive wavelengths directly from router ports into an open line system, gain better visibility into link health, and reduce power consumed per bit. This talk will recap coherent fundamentals, discuss what makes IPoDWDM a practical option for DCI and regional backbone links, and look at what IP folks need to consider before going optical.