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MAR-APR 2018

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INTECH MARCH/APRIL 2018 31 AUTOMATION IT The initiative is aligned around a common goal: simplifying and standardizing the foun - dation for tiered edge computing architectures in the industrial IoT market while still support - ing the ecosystem to provide significant value- added differentiation. Founding members include Advanced Micro Devices (AMD), Alleantia, Analog Devices, Bay - shore Networks, Beechwoods Software, Canoni- cal, ClearBlade, CloudPlugs, Cloud of Things, Cu- mulocity, Davra Networks, Dell, Device Authority, Eigen Innovations, EpiSensor, FogHorn Systems, ForgeRock, Great Bay Software, IMS Evolve, IO - Tech, IoTium, KMC Controls, Kodaro, Linaro, MachineShop, Mobiliya, Mocana, Modius, Net - Foundry, Neustar, Opto 22, relayr, RevTwo, RFMi- cron, Sight Machine, SoloInsight, Striim, Switch Automation, Two Bulls, V5 Systems, Vantiq, VM - ware, and ZingBox. Industry affiliate members include Cloud Foundry Foundation, EnOcean Alliance, Mainflux, Object Management Group, Project Haystack, and ULE Alliance. "South side" and "north side" EdgeX Foundry–based edge devices unify physi- cal sensing and control devices with networks and systems. South side: All IoT objects within the physical realm and the edge of the network that communi- cates directly with those devices, sensors, actuators, and other IoT objects—and collects the data from them—is known collectively as the "south side." North side: The cloud (or enterprise system) where data is collected, stored, aggregated, ana- lyzed, and turned into information and the part of the network that communicates with the cloud is referred to as the "north side" of the network. The EdgeX architecture enables data to be sent "north," "south," or laterally in peer-to-peer architecture as required by applications. EdgeX Foundry architectural tenets EdgeX Foundry was conceived with the follow- ing tenets guiding the overall architecture: l EdgeX Foundry must be platform agnostic with regard to: – Hardware – Operating system (e.g., Linux, Windows) – Distribution: It must allow the distribution of functionality through microservices at the edge, on a gateway, in the fog, on the cloud, etc. – Protocol and sensor l EdgeX Foundry must be extremely flexible: – Any part of the platform may be upgraded, replaced, or augmented by other microser- vices or software components. – It must allow services to scale up and down based on device capability and use case. – It should provide "reference implementa- tion" services but encourages best-of-breed solutions. l EdgeX Foundry must have store and forward capability (to support disconnected/remote edge systems). l EdgeX Foundry must support and facilitate "intelligence" moving closer to the edge in order to address: – Actuation latency concerns – Bandwidth and storage concerns – Remote operation concerns l EdgeX Foundry must support brown and green device or sensor field deployments. l EdgeX Foundry must be secure and easily managed. Service layers EdgeX Foundry is a collection of open-source microservices. Microservices are a new, architec- ture style of building systems using simple, light- weight, and loosely coupled services that can be developed and released independently of each other. Developers describe the term "loosely coupled" as a way to build code without a tight dependency on other code by developing an ap- plication as a suite of small services, each run- ning in its own process and communicating with lightweight mechanisms. They may be written in different programming languages and use differ- ent data storage technologies. These microservices are organized into four service layers and two underlying augment - ing system services. The service layers traverse from the edge of the physical realm from the device services layer, to the edge of the infor - mation realm of the export services layer, with the core services layer at the center. The four FAST FORWARD l The Linux Foundation EdgeX Foundry project is focused on creating an open architecture to achieve the vision and goals of the IoT, IIoT, and Industry 4.0 with a framework that simplifies interoperability and accelerates large deployments. l EdgeX Foundry is a vendor-neutral, open-source software framework built for the edge of the network, so devices, sensors, actuators, and other IoT end points and components can connect securely and operate efficiently. l EdgeX Foundry is fostering an ecosystem of innovative developers of the building blocks of edge devices.

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