IoT solutions utilizing SIM-based cellular technology for connectivity are not new -- but the speed with which IoT is expanding, embracing ever more exciting and dynamic use cases is both compelling and creating market confusion in equal measure. From a market which is reaching maturity -- the standardized, tried and tested, M2M SIM IoT deployments -- to one (e.g. 5G SIM-based IoT) which is largely in its infancy, separating between those solutions that can be bought with confidence and those where continued innovation warrants discussion and consultation, may not be straightforward. And, for these latter cases, choosing the right cellular (SIM) technology and network type will require an understanding of the technical requirements for each use case and the data profile of the asset to be connected.