Amazon Echo devices are the trusted centerpiece of your home, meaning they contain a lot of confidential information in their storage bins. An echo can receive dozens of requests daily. It contains credit card information, addresses and location data. It even stores records of all the commands it has ever received.
No matter how useful your echo is, at some point it will be time to move on and get a new one. What happens to the old one then? If you want to sell it or give it away, you probably do not want to pass on all identifying information to strangers.
The good news is that a simple factory reset effectively wipes off the slate and allows the new owner to start over. However, the process varies greatly depending on which smart speaker type and which generation you own. How to Perform a Factory Reset for Each Echo Device.