The DC Comics Universe has undergone several reboots, with three being the most significant. These reboots aimed to update stories and origins for new generations.
The transition from the golden age to the silver age was marked by the introduction of new versions of characters, rather than a significant event. However, Crisis on Infinite Earths changed this approach, followed by other Crisis events and Flashpoint, which led to the New 52.
Subsequent events, including Convergence, Rebirth, Doomsday Clock, and Infinite Frontier, have attempted to unify the DC Universe. Among these, two reboots were necessary, while one had a negative impact on the company.
Only two of them were necessary.
Author's summary: DC Universe has had several reboots, with only two being necessary.