Cloud and SaaS for dummies…
On-premise/Licensed: You buy a car and you drive it to work whenever you want. You pay for Insurance, Service, MOT, tyres and petrol. You can tweak it or add “go faster” stipes if you like. If it breaks down, you pay to have it fixed.
Cloud: The government buys a train and pays for its maintenance. You hop on it when you need it, and pay a ticket. If you are going to use it regularly, you buy an annual pass. If the train breaks down, the company sends another one to pick you up and they refund your ticket.
Hybrid: You drive your own car to the station and then take a train to work.