What is the best choice of URL structure?
Keep it short and simple. Good URLs are short and to the point. Make sure you aren't filling yours with any unnecessary words or characters, and avoid keyword stuffing. Having the same keyword in your URL more than once won't do you any good.
How do I create a multilingual web address?
You can configure the format of URLs on your multilingual site in two ways: using language prefixes or using separate domains. For example, you can achieve the following format of URLs for two different cultures using language prefixes: English – www.example.com/en-us/path. Spanish – www.example.com/es-es/path.