Items at the top of the Product Backlog should be small enough to fit in one Sprint. They should
also be clear and detailed enough; but not too detailed (eg not with all tasks need to be
identified) as it would be upfront planning. Tasks are created gradually during the Sprint.Product
Backlog items require multiple expertise and usually done by multiple developers. Therefore, they
are not assigned. Tasks, however, are assigned to the individual developers, while everyone stays
accountable.