What's the big difference between My Book Live and My Cloud?

A time ago I have bought a My Book Live 3TB as NAS for my netwerk.

WD sells also the My Cloud 3TB.

What are the biggest differences between My Book Live and My Cloud? 

Greetings, Thelles

Thelles wrote:

What are the biggest differences between My Book Live and My Cloud? 

 

Performance.

The Cloud is substantially faster (in my environment, at least) than the My Book Live.