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IoT / Sensor guides
How to choose a time-series database Pick a time-series database by whether you need relational joins, what protocol your data already speaks, and how much cardinality you actually have. How to choose an air and water quality monitoring tool Air and water tools split into free open data, consumer hardware and managed sensor networks — pick by who needs the number and how certified it must be. How to choose an industrial IoT analytics tool Historians, contextualization platforms, machine-health monitors and shop-floor apps solve different plant problems — map your job before comparing vendors.