When working with Managed Navigation check the ‘Hide physical URLs from search’ checkbox for all pages.
When using a separate authoring site for your website keep in mind that its user experience will be used in search and can be made visible to your visitors.
When working with content catalogs, if your visitors use an invalid URL, instead of seeing the Page Not Found page they will see an empty page.
When working with content catalogs which are published on the Internet use standard SharePoint SEO fields to add search metadata to your catalog items and optimize them for Internet search engines.
When working with content catalogs use slug as the URL field to optimize the URL of the catalog item for Internet search engines.