By default, AEM can auto-generate a proper URL (the Name field) based on the Title field of the page. Generally, you should leave the Name field empty when creating a new page.
However, if you need to override the auto-generated URL, you may enter a custom URL in the Name field. Please note that URLs should:
- Be kept short
- Use all lowercase letters
- Contain no special characters
- Use dashes (rather than underscores)
Finally, the more human-readable the URL structure is, the greater the likelihood the URL will be included in the first results page in a Google search.