A Maryland judge last week ruled that the state’s tax on digital advertising is illegal.  You can view it as a rare win by Big Tech against government efforts to curb its market power.  You could also see it as another victory in the right-wing judicial campaign to hobble government regulators, although that may not be the motivation in this case.

Media mix models (MMM), originally developed in the 1960’s, have undergone a resurgence as new technologies make them easier to execute and click-based attribution becomes less credible. But evaluating MMM brings its own challenges. Australia-based Mutinex offers a vendor-neutral Open Source MMM Validation Framework which is now available for free to North American marketers and agencies.