Off the back of something
Definition 1 of 2
Pro Tip 1/3Cause and Effect
Shows a direct consequence or benefit resulting from a specific action or event. 
He landed a book deal off the back of his popular blog.
Pro Tip 2/3Not Always Positive
Although often used for positive outcomes, it can also follow negative events. 
She faced increased scrutiny off the back of the scandal.
Pro Tip 3/3Implying Momentum
Implies that the subsequent event happens because of momentum from the first. 
The director got more funding off the back of the film's success.