Article

Which IoT platform is right for your device fleet?

Compare Balena, Mender, and Azure IoT Hub in terms of updates, monitoring, and scalability.

An IoT fleet cannot be managed in the same way as a traditional IT environment. Devices remain deployed in the field for years, run on different hardware, and may not always be accessible. Nevertheless, they must be securely updated and monitored. This is why choosing the right fleet management platform is not just about individual features. It also determines how much control a company retains, the integration effort required, and the level of long-term dependency it is willing to accept. Balena, Mender, and Azure IoT Hub take significantly different approaches. Concept Reply helps companies understand how these differences apply to their own IoT architecture and make an informed decision about which platform best meets their needs.

INDEX

Why is the management of IoT devices a strategic decision?

With a growing IoT fleet, the question of how devices are operated quickly becomes an architectural decision. In the field, there is no easy access like on a server in the data center: connections can fail, hardware can vary, and a faulty update can render a device unreachable. At the same time, devices often need to be operated for five, ten, or more years and receive regular software updates.

A suitable fleet management platform therefore lays the foundation for four key capabilities: secure over-the-air updates (OTA updates), remote monitoring and remote diagnostics, handling heterogeneous hardware, and scalable provisioning. What is crucial is not only whether a platform offers these functions, but how it addresses these tasks and what consequences this has for architecture, operation, and engineering.

What is an IoT fleet management platform?

An IoT fleet management platform is a software solution that enables companies to centrally manage, monitor, and update connected devices throughout their entire lifecycle, even when physical access to the devices is not possible. It acts as an operational layer between devices deployed in the field and the applications or cloud services that use their data.

In practice, platforms differ primarily in the infrastructure they provide, their compatibility with different operating systems and hardware, and the level of responsibility retained by the company. These differences directly affect flexibility, development effort, and long-term dependency.

Which four criteria determine
the right platform?

How securely can devices be updated remotely?

Over-the-air (OTA) updates are among the most important capabilities of any IoT fleet. Security vulnerabilities must be addressed, bugs fixed, and new features rolled out without having to access each device individually. At the same time, updates must work reliably even with unstable connections, and devices must be able to revert to a working version if an update fails. For companies, this means that A/B update mechanisms, rollback capabilities, differential updates, and staged rollouts directly affect the risk of downtime, data consumption, and operating costs.

How much visibility is needed for effective operations?

When a device is deployed in a remote location, remote monitoring becomes an alternative to on-site technical support. Device status information, logs, alerts, and diagnostic tools help identify problems early and resolve them remotely wherever possible. Balena provides direct access to terminals, live logs, and device management functions. Mender offers centralised management capabilities, with monitoring and remote shell access available through additional services. Azure IoT Hub relies more heavily on integration with Azure Monitor and other Azure services. Companies must therefore decide whether they prefer an integrated solution with extensive functionality or want to assemble their own operational toolset.

How heterogeneous is the device fleet?

An IoT fleet rarely remains completely homogeneous over time. Processors, boards, operating systems, and peripheral devices may change. Balena uses balenaOS, a Linux-based operating system optimised for containers, and supports a defined range of hardware. Mender supports various Linux distributions as well as Zephyr-based microcontrollers through its MCU client. Azure IoT Hub supports both MPU-based devices (Microprocessor Units) and embedded devices running real-time operating systems (RTOS), although available features, such as OTA updates, vary depending on the device type. The decision should therefore consider not only the current fleet but also future device generations and platforms.

How can a fleet be provisioned in a scalable way?

With each new generation of devices, the effort required for registration, authentication, and configuration increases. Zero-touch provisioning can automate this process. Balena registers devices using a preconfigured image, Mender allows devices to be pre-authorised, and Azure IoT Hub uses the Device Provisioning Service (DPS), supporting methods such as X.509 certificates and TPM-based identities (Trusted Platform Module). Provisioning therefore becomes a matter of both security and integration.

What do the differences mean for companies?

Balena, Mender, and Azure IoT Hub take different approaches to managing IoT fleets. While some solutions combine as many features as possible within a single platform, others prioritise openness and integration with additional services.

For companies, these differences create varying requirements for system architecture, engineering, and operations. The most suitable solution depends on the existing device fleet, available resources, and long-term business objectives.

Balena: minimising operational complexity

Balena combines device management, operating system management, container deployment, updates, provisioning, and monitoring in a largely integrated platform. This can reduce the operational effort required by companies looking to rapidly deploy and centrally manage Linux-based edge applications. However, this simplicity comes with a more restrictive technical framework. For well-defined Linux environments using supported hardware, this can reduce complexity. For heterogeneous embedded device fleets, however, these limitations may become significant.

Mender: more openness, more responsibility

Mender focuses primarily on secure and reliable software updates, supporting various Linux distributions as well as Zephyr-based microcontrollers through its MCU client. This makes it suitable for more heterogeneous environments. However, companies must take greater responsibility for implementing capabilities such as monitoring, remote access, and aspects of CI/CD integration. This openness provides greater flexibility but also requires additional engineering resources and operational effort.

Azure IoT Hub: flexible integration within the Azure ecosystem

Azure IoT Hub follows a modular approach and integrates closely with other Azure services. This provides considerable flexibility for monitoring, identity management, provisioning, and data processing. For companies already heavily invested in Azure, this integration can simplify their system architecture. However, the modular approach also requires greater design and operational responsibility and should be evaluated carefully in terms of long-term vendor dependencies.

Which platform is best suited to each IoT scenario?

The right platform cannot be selected based on a general ranking alone. For a clearly defined Linux-based edge device fleet using balenaOS-compatible hardware, Balena may be a suitable choice when an integrated platform is needed to reduce development and operational effort.

For heterogeneous environments that require greater control over operating systems, update mechanisms, and infrastructure, Mender provides greater openness and flexibility.

Azure IoT Hub is particularly well suited to environments where Azure is already a central component of the enterprise architecture and IoT solutions need to integrate closely with other cloud services.

A well-informed decision should also consider security requirements, device lifecycles, existing cloud and DevOps infrastructure, available engineering resources, and the expected evolution of the device fleet. Ultimately, the best platform is not necessarily the one with the most features, but the one whose architecture best aligns with the company’s long-term operating model.

How can companies effectively evaluate IoT platforms?

A structured evaluation should start with business and technical requirements, rather than a list of products. Concept Reply takes a technology-agnostic approach, first examining existing platforms and the target architecture, then assessing their strengths, weaknesses, costs, security requirements, and long-term viability. This IoT platform assessment provides a reliable foundation for informed decision-making.

Define requirements and the device fleet profile

Which devices need to be managed? What hardware and operating systems are currently in use, and which will be introduced in the future? How critical are software updates, system failures, and remote diagnostics? What are the requirements for security, scalability, and connectivity?

Evaluate platforms against real-world requirements

Platforms should not be compared solely on their features, but also on how they support the target architecture. Key evaluation criteria include update strategies, hardware compatibility, device provisioning, monitoring, integration effort, and dependencies on platform or cloud providers.

Validate critical scenarios through practical testing

Real-world testing is essential for IoT solutions. Concept Reply supports companies with prototypes, proofs of concept, and end-to-end testing under realistic conditions. This enables early validation of whether a platform meets performance, scalability, and operational reliability requirements.

What are the benefits of choosing the right platform?

The choice of a fleet management platform affects the entire lifecycle of an IoT product. It determines how quickly new devices can be deployed, how much effort is required for updates and troubleshooting, which hardware can be supported in the future, and how dependent the architecture becomes on a specific vendor.

An informed decision therefore reduces operational risks, minimizes unnecessary in-house development work, and provides a solid foundation for scaling the IoT fleet.

In IoT, success isn’t about choosing the platform with the most features. It’s about choosing an architecture that fits your devices, operations, and business lifecycle.

Is your IoT platform ready for the future?

Cloud-ready, scalable, and secure - with our technology-independent assessment, you can identify strengths, weaknesses, and specific areas for improvement.

FAQ

What features should an IoT fleet management platform offer?

Is an integrated IoT platform always the best solution?

How can companies objectively compare IoT platforms?

Concept Reply

Concept Reply specializes within the Reply Group in the development of AI and IoT technologies (AIoT) as well as Professional Testing. The experts realize end-to-end solutions for the transformation of companies in the automotive industry, manufacturing, financial services, and intelligent infrastructures. Concept Reply offers its clients software innovations along the entire value chain: from defining the AIoT strategy to AI-supported testing services and implementation, all the way to deployment and operation.