Single feature MVPs are minimum viable products that are meant to test the single most important aspect of the product or service offering. They are meant to validate your product's most critical offering and to dig into how your user is interacting with your solution and whether or not it is solving the right problem in the right way. Single feature MVPs confirm the main hypothesis of your venture and can inform your decision making process going forward.
Use a single feature MVP when you've chosen your main offering and want to validate it with users.
By creating an MVP with a singular focus you can collect focused and clear responses to inform your decision making and pivots going forward.
Website builder, product images and information, your initial means of implementation.