What is the difference between the DC Animated Universe and the DC Multiverse animated films?

The DC Animated Universe (DCAU) was a shared continuity spanning several series and films, primarily in the 90s and early 2000s, with a consistent art style and character interpretations. The DC Multiverse animated films, starting in the 2010s, explore different alternate realities and adaptations of DC stories, often based on popular comic book storylines like 'Flashpoint' or 'Crisis on Infinite Earths.' They are generally self-contained or form smaller arcs, not aiming for a single, overarching continuity like the DCAU.