The Act established 7 well-being goals that public bodies in Wales, including the Welsh Government, must work to achieve, as well as 5 ways of working that should be used to achieve them.
Mae Deddf Llesiant Cenedlaethau'r Dyfodol (Cymru) 2015 yn ei gwneud yn ofynnol i gyrff cyhoeddus ar draws Cymru a enwir yn y ddeddf i weithio tuag at saith nod llesiant.