Public clouds are great for managing applications and data without the frustration and expense of supporting the underlying infrastructure. When I lease a car, I am able to use it for the standard tasks that I perform. Functionally, the car is able to do the same things as a vehicle that I could purchase. I can run errands, drive to work, or even take trips.
One of the main advantages of leasing the car is that when there is a problem or maintenance needs to be performed, I am not responsible. The automobile dealer where I leased the car from handles all of those tasks. Oil changes, filter replacements, and all significant work to keep the car running well is taken care of without my intervention beyond bringing the car in when requested.