MIMs Plus Technical Specifications version 4.0 Final draft released

Image of smart city

Nóirín Ní Earcáin
European Commission DG CNECT

The MIMs Plus Technical Specifications version 4.0 final draft is now available for comment until 6 August. The draft was first published on 23 June and discussed at the Living-in.EU Tech Sub Group meeting on 28  June.

Open & Agile Smart Cities (OASC) leads the development of the MIMs Plus, through the Living-in.EU Technical Sub Group coordinated by OASC Chair Martin Brynskov. MIMs Plus are based on the ten OASC MIMs, five of which were progressed and another five adopted at the OASC Council of Cities meeting on 16 June.

Minimal Interoperability Mechanisms (MIMs) are the minimal but sufficient capabilities needed to achieve interoperability of data, systems, and services between buyers, suppliers and regulators across governance levels around the world. Because the mechanisms are based on an inclusive list of baselines and references, they take into account the different backgrounds of cities and communities and allow cities to achieve interoperability based on a minimal common ground.

Implementation can be different, as long as crucial interoperability points in any given technical architecture use the same interoperability mechanisms. The MIMs are vendor neutral and technology agnostic, meaning that anybody can use them and integrate them in existing systems and offerings, complementing existing standards and technologies.

MIMs Plus consists of the OASC MIMs and relevant European initiatives and specifications (Plus), such as EIF4SCC, ISA2, CEF, INSPIRE, EIP-SCC, ELISA, LORDI, DIGISER, and others. Minimal interoperability requires further integration based on local priorities and legacy, so governments and other stakeholders can add their preferred technical stacks, tools and management standards into operations and development, with an open-ended baseline that can evolve as needs arise.

The final draft of the MIMs Plus Technical Specification version 4.0 includes:

  • an updated list of the OASC MIMs, as approved by the OASC Council of Cities on 16 June 2021;
  • input from JRC aligning OASC MIM7: Geospatial information management (Places) with the INSPIRE directive, which aims to create a European Union spatial data infrastructure to support the crafting of EU environmental policies and policies or activities which may have an impact on the environment;
  • input from OASC Sweden and the Swedish Living-in.EU signatories on ten principles supporting municipalities with IoT implementation (to be incorporated in deeper detail in the version 5.0 of the document). 

Input to the final draft via email to cornelia@oascities.org are welcome until 6 August. The MIMs Plus Technical Specifications version 4.0 (stable) will be released on 9 August on the Living-in.EU website.

The next iteration of the MIMs Plus Technical Specifications (version 5.0), planned for Q4 2021, will incorporate wider structural changes to the document format to better present MIMs Plus.




There are no comments yet.
Be the first one to post a comment!

More articles


Interoperable Europe Act Proposal: Cross-border interoperability for public sector bodies?

On 13 April 2023, the Living-in.EU legal subgroup is organising an online session to discuss the Interoperable Europe Act proposal and its (legal) implications for cities. 


Signatory event on organisational and cultural interoperability

On 9 March, Living-in.EU and Wavestone organised an interactive workshop on the organisational and cultural interoperability challenges that local administrations may face when implementing data spaces and local digital twins.


TAKE PART: UserCentriCities Dashboard Is Now Open

This is a unique opportunity for every city and region interested in learning more about the level of performance in designing and delivering digital services that focus on their citizens and their needs. 


Save the Date: OASC General Assembly — Brussels, 14 June 2023

We are pleased to announce that OASC’s general assembly meeting will take place on Wednesday 14 June 2023 in Brussels, alongside the Brussels Urban Summit.

Promoted by