European Project Definitions
The CIPRNet project  uses the following definition:
Federate simulation bridge is the coupling between the different CI simulators has to be “intelligent” in some way to provide a “bridge” between the different, very heterogeneous simulators.
The DIESIS project  gives the following definition:
The coupling between the different CI simulators has to be “intelligent” in some way to provide a “bridge” between the different, very heterogeneous simulators. These “bridges” have to be created where physical, logical or cyber (inter)dependencies between infrastructures occur. Starting from a basic model of these dependencies, these bridges will be created at runtime to create a federated simulation between existing simulators dynamically. In order to provide this capability, the bridges have to contain several functions and have to be supported by additional components, including:
- a Knowledge Base System (KBS) - shared among the federate subjects – able to gather, filter and maintain traces of any possible synergic actions driving a federated simulation
- a basic model to containing a specific scenario (including initial situations, maps, etc) and a description of dependencies. A scenario can also include some kind of script to introduce faults and attacks into running simulations
- a versatile timing mechanism to manage the synchronism inside the federated simulation.