Core building is always a method that comes up in the implementation process, because of the ability to scale such units, without effecting other core blocks, like entrepreneurs, themselves.
To progress with this method, can be an arduous task as it can be difficult to create new core units that are interoperable, and innovative, with other core buildings.
But when that process has been optimised, scaling becomes much more manageable, as the foundation has been completed, and the progression towards a peak of development begins to occur.
It can be however not the best approach for those between implementations that have a very small core capacity.
How do you build your core and have you been able to scale it?