This paper provides an overview of MiG, a Grid middleware
for advanced job execution, data storage and group collaboration in an
integrated, yet lightweight solution using standard software.
In contrast to most other Grid middlewares, MiG is developed with a
particular focus on usability and minimal system requirements, applying
strict principles to keep the middleware free of legacy burdens and overly
complicated design. We provide an overview of MiG and describe its
features in view of the Grid vision and its relation to more recent cloud
computing trends.