An eBook is an example of a digital product because it is a digital version of a book that can be bought, sold, and distributed over the internet, and is typically protected by copyright laws. A physical hard drive is a hardware component used for storage, not a product that can be sold as a digital file. Cloud storage services provide space to store digital products but are not products themselves; they are a service. A wifi router is a physical device used to connect to the internet and does not qualify as a digital product.