I have a RUT950 but i cant find the AZURE IOT option under system-> Admin
I am on firmware:FW ver.: RUT9XX_R_00.06.00.4
It is not yet available in Teltonika standard firmwares. However, if all goes well it should become available by the end of this spring.
Meanwhile there is a test firmware where Azure is available. You can download it from here.
Please keep in mind that is a test firmware, much like a beta version it has not been fully tested and developed just yet. Teltonika usually does not provide support for test firmwares since these firmwares are not sold along with any product. But we would be very happy to hear any feedback from you regarding the feature. User feedback helps us make better products so it is beneficial for everyone. :)