Due to the distributed and decentralized nature of the GAIA-X Infrastructure and Data Ecosystems, there is the need to integrate a way to allow the composition of services derived from components/ assets from dierent service providers. [...] For instance, service time to completion is a non-functional QoS requirement corresponding to the instant between the submission of a service (e.g., program/process/thread/task in an operating system) until the execution and the return of the output of the service to the customer. [...] As a first simple example justifying the need to accommodate more flexibility in terms of entity Both the new as well as already known challenges description and a need to integrate both can be accommodated via a network service com- functional and non-functional networking and position model and also via adding more flexibility interconnection requirements, let us consider the to the self-descrip. [...] The latter integrates both functional and tion, functional and non-functional requirements non-functional service requirements and has the of the access to those nodes, and interconnection capability to integrate meta-data, e.g., in the form of description. [...] This requires identification of the into the architecture description and scope in order underlying fundamental services to compose and to enable interoperability and compatibility at the manage the life cycle of application level services 7 and network level services (also known as network services nowadays).
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