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(Informative)

Many consider the loose “metaverse” concept as one of the most promising evolutionary steps of Information and Communication Technology and some have developed implementations that can be classified as “metaverse”. However, metaverse designers and developers have generally made technology decisions that best responded to their needs, with little o no consideration of the need to interact or interoperate with other metaverse instances.

In response to concerns that such metaverse “walled gardens” do not fully exploit the opportunities offered by current and expected technologies, MPAI has developed  Technical Reports and Technical Specifications in an attempt to provide specifications whose implementations make metaverse instances “Interoperable”:

  1. Technical Report: MPAI Metaverse Model (MPAI-MMM) – Functionalities introduces definitions, assumptions, a set of high-level use cases, a collection of exemplary service providers, a set of ~150 Functionalities that a metaverse instance might support, a review of the main metaverse-enabling technologies, an analysis of metaverse governance issues, and a standardisation roadmap.
  2. Technical Report: MPAI Metaverse Model (MPAI-MMM) – Functionality Profiles introduces and revises an extended list of definitions; a metaverse “Operation Model” based on the notion of Processes performing or requesting other Processes to perform Actions on Items, i.e., Data, Metadata, and Qualifiers supported by an M-Instance, the type of metaverse to be specified by MPAI; an initial identification of Actions, Items, and Basic Data with Use Cases and Functionality Profiles; a collection of representative use cases tested against the Operation Model; and four initial Functionality Profiles.
  3. Technical Specification – MPAI Metaverse Model (MPAI-MMM) – Architecture (MMM-ARC) specifies the Functional Requirements of Processes and Actions to provide means to achieve Interoperability between independently designed two or more M-Instances that execute Processes, and produce Data that comply with the MMM-ARC Functional Requirements, if necessary via a Conversion Service.
  4. Technical Specification – MPAI Metaverse Model (MPAI-MMM) – Technologies (MMM-TEC) specifies or references specifications of Items including Qualifiers that enable interoperability between M-Instances supporting the technologies referenced by the Qualifiers.

This document – Technical Specification – MPAI Metaverse Model (MPAI-MMM) – Technologies (MMM-TEC) V2.0 – merges and extends the MPAI-ARC V1.1 and the MPAI-TEC V1.0 into an integrated specification by providing the MPAI-MMM APIs and Reference Software.

In all Chapters and Sections, Terms beginning with a capital letter are defined in Table 1. All MPAI-defined Terms are accessible online. All Chapters are Normative unless they are labelled as Informative.

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