DMA interop bookmarks

The objectives of this report are to present the main economic features and the state of the market for some NI-ICS and to analyse:

Matrix blog- 2nd DMA Stakeholder Workshop: Interop between messaging services

• Panel 1: Introduction to horizontal interop between messaging services: goals, challenges and potential solutions
• Panel 2: Exploring the technical aspects of interop (Part 1): end-to-end encryption, security of the service
• Panel 3: Exploring the technical aspects of interop (II): data collection, identification of users, quality of interoperable services, system management, integrity of the service/prevention of misuse

Carl Schwan’s writeup (from NeoChat) on 2nd workshop on interop

Architectural options for messaging interoperability:

• Overview of Technical Options
• Requirements Scope
• Interoperability is Hard
• The first 10% is often easy
• It gets better
• The surface area is enormous
• It has to be implemented on the client
• Gatekeeper Libraries
• Common versus Gatekeeper-Specific Interfaces/Protocols
• Implementor Complexity
• Clearer Specifications
• Developer Experience
• Deployment Issues with Multiple Gatekeepers
• Identity
• Timeline

The European law will require messaging systems to be interoperable. Unipile respects this obligation while ensuring the security of data exchanges

The introduction of a federal XMPP-based system is presented, which could be used to implement an interoperability obligation in practice.

Has anyone guesstimated which services are likely to get gatekeeper status under the DMA (art 3)? Lists based on the market cap/revenue thresholds are overinclusive; the user number thresholds (45M, ie 10% of the EU) are the bigger filter, though data is scarce. Feedback welcome! https://t.co/OidHbOM3Lb

What’s driven the DMA?
What problems need to be solved?
What are the requirements?
So, what could this actually look like?

• Finding Bob
• Connecting to Bob
• Locating users
• Talking to Bob
• Group communication Conclusion

1 Introduction
2 Implementation Paths
2.1 Standard Protocol
2.2 Client-side Bridges
3 Open Challenges
3.1 User Identity
3.2 Key Distribution
3.3 User Discovery
3.4 Spam and Abuse
3.5 User Interface Design
4 Discussion