  Open science describes the movement of making any research artefact available
to the public and includes, but is not limited to, open access, open data, and
open source. While open science is becoming generally accepted as a norm in
other scientific disciplines, in software engineering, we are still struggling
in adapting open science to the particularities of our discipline, rendering
progress in our scientific community cumbersome. In this chapter, we reflect
upon the essentials in open science for software engineering including what
open science is, why we should engage in it, and how we should do it. We
particularly draw from our experiences made as conference chairs implementing
open science initiatives and as researchers actively engaging in open science
to critically discuss challenges and pitfalls, and to address more advanced
topics such as how and under which conditions to share preprints, what
infrastructure and licence model to cover, or how do it within the limitations
of different reviewing models, such as double-blind reviewing. Our hope is to
help establishing a common ground and to contribute to make open science a norm
also in software engineering.
