As a former employee at Cognizant, I explored the Cognizant resignation policy immediately when moving to another role. Depending on the band level, notice periods vary: generally, associates and senior associates faced a 60 day notice period, while managers and above had a 90 day notice period. The resignation process is straightforward but requires advance planning, especially at higher levels, as the shifts in projects and handovers are prioritized. HR and managers usually work closely to ensure smooth exits, but it is worth clarifying policies directly with HR as notice periods can vary with roles and situations.