Through several years of research on the subject of cloud functions, researchers including ourselves have gained a thorough understanding of the advantages and disadvantages of function-based application development. Along with increased maturity of FaaS, a more specialised consideration of potential use cases is needed to filter out the ones where the technology shines compared to the ones where significant weaknesses become apparent and other technologies, perhaps even in combination, would be a better fit. This early experience report informs about how we have deployed cloud functions around an existing cloud management platform as a variant of the well-known solar system approach of introducing microservices around monoliths.

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