jobs to be done

The job I hire coffee to do by Nathan Jones

When we buy a product, we essentially ‘hire’ something to get a job done. If it does the job well, when we are confronted with the same job, we hire that same product again. And if the product does a crummy job, we ‘fire’ it and look around for something else we might hire to solve the problem.
— Clayton Christensen in Competing Against Luck: The Story of Innovation and Customer Choice (2016)