What is cloud mining? Simply, this means that you will be renting computing power needed to mine from a third-party source.
According to coindesk report:
Instead of sacrificing precious underground real estate, software companies began to rent computing power from warehouses full of powerful machines hosted elsewhere.
Also, when you pay for cloud mining services, you’re renting part of a pool of a great deal of computational power, meaning that you’re more likely to beat other, less powerful bitcoin miners that are racing to generate a winning hash that earns them bitcoin.
Another thing! Cloud mining will nor require you to setup things that regular cryptocurrency mining does since you will be renting those out from a different source.