# Nebula Neural Fabric Overview Nebula is the neural network fabric[^4] which Fractal rests upon. It is responsible for the synchronization of all data within the ecosystem. Nebula is a type of *graph neural network*[^1] which extends the foundations of *graph theory*[^2][^3]. <span style="color: #b93131;">(temporarily stubbed out)</span> ##### See Also > [Nebula Website](https://nbu.la) > [VFN Website](https://vfn.ai) ###### Relevant Search Tags > #overview #nebula [^1]: [Graph neural network - Wikipedia](https://en.wikipedia.org/wiki/Graph_neural_network) [^2]: [Graph theory - Wikipedia](https://en.wikipedia.org/wiki/Graph_theory) [^3]: [Graph (discrete mathematics) - Wikipedia](https://en.wikipedia.org/wiki/Graph_(discrete_mathematics)) [^4]: [Neural network (machine learning) - Wikipedia](https://en.wikipedia.org/wiki/Neural_network_(machine_learning))