Hi Jeff, I appreciate the points, I hope you realize I am just passing along reference material and I don’t think this is some unified 7 layer model. Really just throwing it out and I recognize someone was likely riffing on 7 layers. The points you raise are good ones. IoT is a huge umbrella covering probably too many use cases, many in which there is often nesting, so taking a vehicle for example its sensors provide input to controller but also to performance measurement and maintenance databases which can then bubble up to a next layer (collision sensor, to ABS, to Cruise Control, to Heads Ups Display). So even in a given layer a lot can take place. Pretty useful for a discussion group though, or at least that was my intention. Best, Sal From: j stollman [mailto:stollman.j@gmail.com] Sent: Monday, February 29, 2016 10:48 AM To: Salvatore D'Agostino Cc: dg-idot@kantarainitiative.org Subject: Re: [DG-IDoT] IoT 7 layer pic Sal, Thank you for forwarding this graphic. I find this graphic intriguing, and a good straw man starting point. But I am concerned that it is misleading. In the enthusiasm to try to leverage the successful pattern of the OSI model, we are force-fitting IoT into a model that doesn't quite work. Specifically, I have the following immediate concerns: 1. IoT in this model seems to be limited to "sensors". I don't see how the Big Data layers apply to "actuators." And I don't see how the "processors" conform to any but Layers 5 and 6. Perhaps I am being narrow-minded in clinging to the notion of IoT as representing sensors, processors, and actuators (and applications?). 2. I am uncomfortable with the notion that the Cloud layer is a necessary layer. Many IoT implementations are highly localized and will not require the Cloud or Big Data. I suspect that other concerns will arise as we look at it longer. I find that this model represents one view on one part of IoT. It may be a big and important part. But I don't think it is adequate to define all of IoT. And I fear that it will force people into thinking about IoT in only this way and lose sight of effective and efficient solutions that do not conform to this model. Jeff --------------------------------- Jeff Stollman stollman.j@gmail.com 1 202.683.8699 Truth never triumphs — its opponents just die out. Science advances one funeral at a time. Max Planck On Mon, Feb 29, 2016 at 8:54 AM, Salvatore D'Agostino <sal@idmachines.com> wrote: https://image-store.slidesharecdn.com/6eb9890a-3615-4dd8-9cd7-7e56d0be5518-o... Salvatore D'Agostino IDmachines LLC 1264 Beacon Street, #5 Brookline, MA 02446 USA http://www.idmachines.com <http://www.idmachines.com/> http://idmachines.blogspot.com <http://idmachines.blogspot.com/> @idmachines +1 617.201.4809 <tel:%2B1%20617.201.4809> ph +1 617.812.6495 <tel:%2B1%20617.812.6495> fax _______________________________________________ DG-IDoT mailing list DG-IDoT@kantarainitiative.org http://kantarainitiative.org/mailman/listinfo/dg-idot
