Virtual Tables, real benefits in AL with Business Central

How are these tables “magically” updated? Where can we find code?

Your explanation is on point and with some humor

i know this is a bit of an old video but I was hoping to hear more about what the virtual table IS. You mentioned in the beginning that we have these native tables that 'exist' like Customers and what now. Then, went on to create a table but I didnt hear you explain the difference between what you created and what already exists. What would the use case be for a virtual table in the power platform?