PBS is this ABA under another heading?

Hi,

my sons autism school has started undertaking PBS with some

of the children and my son is one of them.  I have read some research around this, and would appreciate any positive insight or otherwise as o want to ensure our knowledge comes from a good place.

my concern is that this is just another ABA approach which is not appropriate for children with disability such as ASD, but I want to check my grounding.

if there are any positive examples, or insights to PBS and children with autism/c I would welcome them.

thanks