Canonical URLs, also known as "canonical tags," are a way for website owners to specify which URL they want search engines to consider as the "main" or "preferred" URL for a specific page. This is particularly useful when a website has multiple pages with similar or duplicate content. One example of where canonical URLs can be useful is on e-commerce websites like Amazon. Amazon, like many other e-commerce websites, has a large number of product pages with similar or identical content. For example, a product may have multiple URLs, such...