The answer
Because routes, deep links, filters, and shareable state are often encoded in the URL and must be parsed consistently.
URL, URI, Domain, Path, and Query Explained
Why do frontend apps care about URL structure?
More FAQs in URL, URI, Domain, Path, and Query Explained
A URL is a type of URI that also tells you how to locate a resource. In practice, people often use URL for web links.
A domain name is the readable name for a site, like example.com, that DNS can translate into an IP address.
The path identifies the route or resource. The query string adds optional parameters like filters or pagination.
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