Summary:

- The article is about Jamie Siminoff, the founder of the smart home company Ring. It discusses his new book called "Ding Dong: The Rise and Fall (and Rise Again) of the Doorbell".

- The book covers Siminoff's journey of creating Ring, the company's acquisition by Amazon, and the challenges he faced along the way, including nearly going bankrupt.

- The article highlights how Siminoff's perseverance and determination helped him turn Ring into a successful smart home technology company that was eventually acquired by a tech giant like Amazon.