There are a few providers, such as Rocket Referrals and PowerReviews, that help with collecting reviews and displaying them on your website and our platform makes it quick and easy to add.
Some vendors provide multiple embed codes for different purposes, such as one that shows a ratings summary (to be placed in a sidebar or similar) and one that shows full reviews written by customers (to be the main focus of a page). Where you want your reviews displayed will determine what type of widget you should install. Your reviews vendor should be able to help you obtain the right snippet of code.