IoT Hub device and module twins limit.
There is limit of 8KB limit for IoT Hub device twins. What’s the limit on module twins? How much total size allowed for both device twins and module twins? Is any plan to enhance the size of both twins in GA or later release?
The limit for module twins and device twins is the same: 8KB per section. We do have plans to increase the size limits but can’t disclose a date yet.
Azure IoT Platform
Jack Tregurtha commented
I would like to add that I have found the 8KB limit quite limiting. I'm working on a project where a significant amount of customization through deployment createOptions is necessary. We have just hit the size limit and are now stuck. We are trying to find workarounds but in doing so are certainly straying from best practices to stay under the 8KB limit. Even just a 16-32KB increase would be enough to make it so things "just work" as they should, without needing to hack together an unnatural solution.