The IESG has approved the following document: - 'Service Models Explained' (draft-ietf-opsawg-service-model-explained-05.txt) as Informational RFC This document is the product of the Operations and Management Area Working Group. The IESG contact persons are Warren Kumari and Benoit Claise. A URL of this Internet Draft is: https://datatracker.ietf.org/doc/draft-ietf-opsawg-service-model-explained/ Technical Summary This document describes service models as used within the IETF, and also shows where a service model might fit into a Software Defined Networking architecture. Note that service models do not make any assumption of how a service is actually engineered and delivered for a customer; details of how network protocols and devices are engineered to deliver a service are captured in other models that are not exposed through the Customer-Provider Interface. Working Group Summary There was debate on the "network service model" concept in RFC 8199 . This was solved by coordinating the cross WG discussion with NETMOD during both the WG adoption call and WG LC. Document Quality This document has received extensive input and review. It has already been used to direct L2SM and L3SM work. One of the authors of a closely related document RFC8199 (Benoit Claise) reviewed this document and provided very useful comments, to align the document and terms -- there have been integrated. Much of the discussion is somewhat over my head, and so I'm relying on his expert opinion. Personnel Document Shepherd: Tianran Zhou "Responsible" AD: Warren Kumari