It is way more complicated than just 10,000 jurisdictions: - mapping an address to one or more jurisdictions - digital deliveries might not have a ship

It is way more complicated than just 10,000 jurisdictions: - mapping an address to one or more jurisdictions - digital deliveries might not have a shipping address - tax rates often depend on the type of product - product types have different definitions in different jurisdictions - some taxes are time dependent (back to school tax holidays) - some buyers are exempt in some jurisdictions for some products