Device funnels without vanity counts
Replace “devices online” with an activation definition that still holds after a silent OTA. Includes the mistake we made in 2021.
Field notes
Writing that started as a margin scribble on a payload dump.
These are not launch announcements. Each note comes from a Bangkok critique session or an alumni fleet that surprised us.
When MQTT payloads quietly drift
A boolean became a string on an HVAC topic. Three weeks of charts remained green. Here is the check we now run on Monday mornings.
Hardware cohort retention without pretending it is SaaS
Sleep modes, buffered uplinks, and why weekly windows beat daily ones for most Thailand fleets we see.
What Bangkok hardware teams actually put in the measurement stack
A composite of stacks from alumni fleets — not a vendor ranking, and not a claim that one tool fits every SKU.