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Interview Guide

The following sections contain the basic agenda for our semi-structured interviews. We loosely followed these questions based on the participant's responses.

Demographic and Professional Background

  • Role
  • Years of professional experience
  • Company domain
  • # of employees

System Background and Technological Details

  • General domain/purpose of the system
  • Total number of developers
  • Team size
  • Number of services
  • Granularity of services (e.g. # of operations, LoC)
  • Communication protocols (e.g. REST, SOAP/WSDL, messaging)
  • Programming languages
  • Middleware, frameworks, technology, containers, orchestration, etc.

Migration to Microservices and Software Quality

[...]

  • What were the main drivers for migrating to a (Micro)service-based system and were the goals accomplished respectively?
  • How do you assess the migration impact on software product quality (ISO 25010)?
  • What technique/method did you use to identify service boundaries and granularity?
  • Can you specify the timeframe and (additional) resources needed throughout the entire migration process?
  • Briefly describe the main challenges faced during the migration process.
  • Do you consider moving to a Serverless (FaaS) deployment model for your system?

[...]