Kalmar Case Study | Nexer
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Kalmar Municipality, located in south-eastern Sweden, comprises 15 local government units and 16 cities, including the city of Kalmar.

Like all local governments, Kalmar’s data is spread across many legacy systems, making it very difficult to aggregate data into a single source to access accurate, consistent data to extract and deliver insights while maintaining or lowering overall costs.
Kalmar explored the potential of bringing this critical data together in the cloud using Microsoft’s technology. By doing so, they could quickly identify and resolve problems related to service delivery while following strict compliance regulations and guidelines for data collection and governance, including GDPR.


Kalmar had been working on a project with Microsoft to collect data from multiple legacy system sources but needed a secure place to store it – a data platform. Microsoft introduced their partner, Nexer Insight, to Kalmar to explore different options for data management while ensuring full compliance with all established protocols and policies for the protection and management of this data.

To pilot the platform and demonstrate value early, surveys were conducted across Kalmar’s departments to identify use cases expected to drive significant value.

The use cases chosen were:
  • Investigating the connection between food waste and sound levels in schools and restaurants, and,
  • Tracking and analysing domestic and business refuse collection operations, including real-time route information, issues faced by trucks, and factors that contribute to bins not being emptied, such as weather and attendance.


Together Nexer Insight and Kalmar created an Azure hybrid data platform using SQL Server and Azure Data Factory to standardise and share data. The platform was designed to comply with GDPR and include data from on-premises SQL environments and IoT sensors on a LoRaWAN network. A proof of concept for Purview was also implemented for data lineage tracking and data governance.


Nexer Insight successfully created a Hybrid Data platform featuring two mirrored structures, one on-premises and the other in the cloud, with a steadfast commitment to security. They have also fully complied with GDPR by implementing stringent measures when transferring data between on-premises and the cloud.

Kalmar is still amidst the ongoing refuse collection project, and they continue to be satisfied with the valuable insights they gain from the data.

The team reviewed multiple use cases and decided to shift their focus to visitor data, examining weather, events, days, and visitors to determine if they are attracting the desired audience. This information will offer insights into the future of specific events, with the project still in its developmental stage.

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Carl Tönseth
Business Manager IoT & AI, Sweden

+46 721 57 21 91

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