How do the multiverse concepts of Marvel and DC differ?

Marvel's multiverse, largely popularized by the MCU, features an infinite number of universes, each with its own variations of characters and realities. The concept of the Multiverse is deeply integrated into the fabric of Marvel's storytelling. DC's multiverse, primarily explored in the comics, involves multiple universes and alternate realities often connected through specific events or entities. While also expansive, DC's multiverse sometimes feels more structured, with defined 'multiversal events' that impact multiple realities, whereas Marvel's feels more constantly expanding and unpredictable.