Harmony has been building integrations for years, as a MuleSoft Premium partner for organisations with complex landscapes.
The Finnish platform Frends, which focuses on European sovereignty, complements that for anyone who wants to start faster, with a smaller team, or with a runtime that runs entirely within their own network.
Frends is a European iPaaS on which we can build integrations and processes visually.
You build processes in BPMN 2.0, with 300+ ready-made connectors and a built-in AI orchestration layer. The runtime runs in the cloud, on-premises, or both at once.
We believe IT drives innovation and delivers growth.
Our focus is on digital harmony: removing friction so that people, processes and platforms fit together. That is where the time to work on growth comes from.
Years of integration practice, on a platform that runs in your own network.
That way we work as an extension of your own IT team, from architecture and implementation to management.
What we do
A Frends implementation at Harmony runs from architecture and build to management after go-live, for clients in the Netherlands, Belgium and Luxembourg. That can be a complete implementation project, or a Frends consultant who joins your team on an environment that is already running.
We set up processes, data flows and APIs visually in BPMN 2.0: an open notation, not a proprietary dialect.
We connect source systems through 300+ ready-made connectors, with a built-in AI layer for routing and processing.
Access management and policies, within a platform that is ISO 27001 certified and NIS2 and GDPR assessed.
Cloud, on-premises or hybrid, with 24/7 visibility of what is happening and error handling that keeps watch.
Our approach
After the first two steps you know whether this is the right platform, with an integration from your own landscape already running. We usually take these steps in this order, and they have proven themselves in practice.
We map your application landscape, the existing integrations and the processes around them, and decide together whether Frends is the right choice. If MuleSoft is the better fit, we tell you at this stage.
With a trial licence, we build a real integration from your own landscape in a secure test environment. Your own data and your own systems on both ends, so the decision rests on something tangible.
We define the initial architecture: where the agents run, how shielded zones stay separated, how data is routed and stored, and how sovereignty and compliance requirements are built into the design rather than added afterwards.
Environments, user management and the CI/CD pipeline are set up, then the processes are developed and tested in an Agile way. Each integration only goes live after your approval and is then handed over to support.
Proactive monitoring of processes and platform by a service desk available 24/7. In the event of an incident, we analyse it, liaise with third parties where needed and roll out the fix. Through Service Level Management, we propose improvements.
Where we use it
Harmony has been delivering integrations at the largest organisations in the Benelux for years. Below is what that achieves in each sector.
Another sector? No problem. We have broad experience.
Talk to an expert
The rules are being rewritten right now, on systems that have been in place for decades. This is what an integration layer solves there.
Quarter-hourly consumption flows without gaps to billing, the customer portal and the market parties.
Messages to grid operators and suppliers go out in the right format and within the deadline, via EDSN in the Netherlands and Atrias in Belgium.
SCADA and metering systems feed ERP and CRM, without affecting the availability of operations.
The runtime runs within Europe, on-premises where required, and keeps running when the connection to the outside drops.
A factory runs on systems chosen layer by layer: ERP in the office, MES and WMS on the shop floor. This is what an integration layer solves there.
Growth and acquisitions rarely leave you with a single ERP. A process now runs across them without manual work in between.
MES, WMS and SCADA deliver their data to ERP, via OPC UA where the machines speak it, and orders travel the same way back to the line.
A deviation automatically becomes a work order and an ordered part, right through to the supplier's confirmation.
A rejected batch can be traced back to supplier, machine and moment, without three systems side by side.
Supply chain partners each bring their own system and their own format. This is what an integration layer solves there.
Orders, packing slips and invoices come in as EDIFACT, GS1 or through an API, and all land in the same place.
Sales channels, WMS and ERP see the same thing, even when something changes in three places at once.
Status updates from carriers flow through to the order, customer service and the customer, without anyone opening a portal.
A faltering message flow is visible before a lorry or a dock is left waiting.
Comparison
Frends and MuleSoft are both integration platforms, but they are built for different situations. Frends suits teams that want to start quickly and keep things compact. MuleSoft suits organisations that set up integration broadly and in a standardised way.
Harmony delivers both, so the choice does not have to be made in advance. We look at your landscape first and then tell you which platform fits. Below, you see them side by side.
| Comparison criteria | Frends iPaaS | MuleSoft Anypoint Platform |
|---|---|---|
| Architecture and infrastructure | Hybrid network of lightweight .NET 8 agents, with a control panel in the cloud or on-premises. | API-led network of JVM runtimes: CloudHub 2.0, Runtime Fabric or on-premises. |
| Air-gapped capability | Designed for isolation. Agents and control panel work autonomously, with offline distribution of NuGet artefacts. | Possible via Anypoint PCE, with a heavy Kubernetes cluster and complex on-premises maintenance. |
| Total cost of ownership | Volume-based, on monthly executions. Unlimited agents and processes, no extra cost for microservices. | Capacity-based, on vCores or API calls. Higher entry cost and modular add-ons for MQ, monitoring and connectors. |
| Profile and development languages | C#, .NET and BPMN 2.0. Gentle learning curve for regular back-end and full-stack developers. | Mule XML, DataWeave and Java. Steep learning curve and certified specialists. |
| Development speed and reusability | Visual canvas with C# snippets. Custom connectors become ordinary NuGet packages. | AI-assisted Anypoint Code Builder. Custom connectors require the Java or Mule SDK. |
| Data sovereignty and legal framework | European entity, GDPR-native. Not subject to the US CLOUD Act. | Salesforce, a US entity. Subject to the US CLOUD Act. |
| Error handling and observability | Traceability per BPMN step, with try-catch and automatic retry. | Anypoint Visualizer and Titanium monitoring, with proprietary on-error scopes. |
| Scalability and peak load | Horizontal agent groups behind a load balancer, asynchronous via Azure Service Bus or RabbitMQ. | Multi-AZ replicas in CloudHub 2.0, with autoscaling and Anypoint MQ. |
| Vendor lock-in | Limited. The logic is written in standard C# and can be moved to any .NET environment. | Considerable. DataWeave logic needs manual rebuilding or conversion tools when you migrate. |
| AI and agentic innovation | Early adoption of the open Model Context Protocol, including local, isolated LLMs. | Strong integration through Salesforce Agentforce and the MuleSoft AI Chain framework. |
A short conversation is usually enough to tell how we can best get you started.
Integrations30 January 2026
Why Epic Vereniging NL chose Harmony and MuleSoft for a shared API platform.
Integrations6 January 2026
Why the Epic hospitals are jointly choosing a modern API management platform.
Integrations20 January 2025
Why an integration platform is indispensable for making data available securely and system-independently.