I had five rounds with ServicNow.

Mostly all rounds were roughly 45-60 mins long.

Round 1: Coding round.
Problem 1: Given number string find next greater number.
Problem 2: Given schedule of job execute maximum number of jobs.

Round 2: Coding round
Problem 1: Find n maximum number from stream of numbers.

Round 3: Problem solving
Problem : 1: Given start time and distance to travel and also when rush time will start and speed in rush time calculate total travel time.

Round 4: Design Round (LLD + HLD)
Problem 1: Design Chess game.

That's all

Thank you