Importance of OTA in IoT Products
When it comes to IoT and edge development, the single most important feature is your ability to update the devices remotely i.e. over the air updates (OTA).
You can cut corners in any other device features but get the OTA 100%.
On my first IoT project, I made the mistake of spending months developing and perfecting all kinds of features and left the OTA until the end. In my mind, OTA had a lower priority because the device had to have its intended functionality first. After all, we only needed to update the devices after they were shipped.
Wrong....
When the time came to develop the OTA process, we ran into several unexpected challenges which ultimately delayed the project. Had I chosen to build the OTA first, the team could have tested it all along with each iteration. As a result, we could have shipped the initial product on time by cutting out some of the other features that could easily be added over the air at a later time. But, without a robust OTA process, no features could be shipped at all.
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So, develop the OTA functionality ASAP. Ideally, tackle it right after adding "Hello Word". This will save you a tremendous amount of time and money. Not to mention many sleepless nights and heartache.
OTA Design Considerations
When you have a large number of devices in the field, you need to have complete visibility into the state of OTA process. Make sure that each device sends the confirmation of the following stages to your OTA application in the cloud.
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