Analog cameras have been around for many years.  They have slowly increased in quality and require a camera DVA, and coax cable with 14/2 cable for power.  

IP cameras have slowly gotten better and better through out the years.  

Ring is a new camera system that started with a doorbell.  The main advantage to Ring doorbells is that they can be installed using AC power or using battery power.  You can even connect a Solar Panel so that you never have to worry about charging the battery.  This system gives you to install the camera anywhere.  And with there lifetime guarantee, it is worth taking a look at.