Serverless computing is an emergent compute paradigm reducing processing and operational units to single event-driven functions for orchestration. With its micro-granular architectural characteristics, serverless computing is bound to produce a currently inconceivable set of architectural issues and challenges in the medium-and long-term. Therefore, it is going to become more and more important to define Technical Debt (TD) items-that is, a way to measure the additional long-run project cost connected to immediately-expedient technical decisions-for serverless computing as well as hybrid compute models (e.g., Serverless + Microservices hybrids). This article illustrates a conceptualization and research roadmap in the direction of defining such TD items starting from a technical overview on serverless computing.

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