The Technical Working Group of Living-in.EU works together to develop a common list of standards and technical specifications to achieve interoperability of data, systems, and platforms among cities, communities, and suppliers in Europe, enabling solutions such as open urban platforms, data spaces, and digital twins. These come together as a collection of interoperability issues and respective guidance - referred to as Minimal Interoperability Mechanisms (MIMs) Plus: a set of practical capabilities based on open technical specifications that allow cities and communities to replicate and scale solutions globally. 

The MIMs Plus are updated on a yearly basis, with a new version being published June every year. The Technical Working Group provides guidance to this development work and approves the update of the overall MIMs Plus. The individual MIMs are developed in MIM-dedicated working groups. 

If You want to join a MIM specific working group you can submit your interest here.

Each MIM follows the y4505 standard: It starts with a clear objective, followed by a number of capabilities linked to requirements that are linked to a list of mechanisms and relevant technical specification. It is then that the MIM provides interoperability guidance for these mechanisms. To ensure that you are implementing the MIM well, it also provides conformance and compliance testing.
 

For information on the MIMs Plus version 5, 6 or 7 see below.

The latest version of the MIMs Plus (version 7.5) can be downloaded from the commitment section (below) or from the side.

Technical subgroup - Work plan Priorities 2025:

• Continue the development of MIMs Plus (published MIMs Plus Version 8)

• Develop operational guidance related to technical aspects of procurement, deployment/integration and the development of methodologies for conformance and compliance testing 

• Explore the interconnection among platforms, to establish a European Smart communities data space and link with other data spaces

Download the 2025 Workplan here