As described in Wikipedia AoS and SoA, standard C# array is array of structures(AoS), however the structure of arrays(SoA) is suitable for utilizing the CPU cache, which is faster than the main memory ...

to be working with Unity Vector3 structs, but can be modified to work with any other 3D (or 2D & 4D or higher) struct/arrays for speedy & light Construction & Reconstruction, to be light on memory, ...