  Microservice Architecture (MSA) denotes an emerging architectural style for
distributed and service-based systems whereby each microservice is highly
cohesive and implements a single business capability. A microservice system
consists of multiple, loosely coupled microservices. It provides complex
capabilities through services interacting in choreographies. A single dedicated
team, typically practicing DevOps, is responsible for each microservice, i.e.,
it "owns" the service. However, while systems relying on MSA have several
architectural advantages especially for cloud applications, their realization
is characterized by an increased accidental complexity due to redundant
handcrafting of implementation, e.g., to make each service standalone runnable.
A promising way to cope with such complexity is the usage of Model-driven
Development (MDD) whereby models are used as first-class entities in the
software development process. Although there are already first steps taken on
how MDD could be applied by a single team to implement its microservices, the
question of how MDD can be adapted to MSA's development distribution across
multiple teams remains an issue. In this paper we envision the application of
Collaborative Model-driven Software Engineering (CMDSE) to MDD of MSA by
surveying relevant characteristics of CMDSE and identifying challenges for its
application to MSA. The present paper takes a first step towards enabling
holistic MDD of MSA across microservice teams.
