  The SCIP Optimization Suite provides a collection of software packages for
mathematical optimization centered around the constraint integer programming
framework SCIP. The focus of this paper is on the role of the SCIP Optimization
Suite in supporting research. SCIP's main design principles are discussed,
followed by a presentation of the latest performance improvements and
developments in version 8.0, which serve both as examples of SCIP's application
as a research tool and as a platform for further developments. Further, the
paper gives an overview of interfaces to other programming and modeling
languages, new features that expand the possibilities for user interaction with
the framework, and the latest developments in several extensions built upon
SCIP.
