Magento has a special panel to take care of the catalog categories of SEO. To access this panel, navigate to Stores | Configuration | Catalog | Search Engine Optimization, as follows:

This panel has the following options:
With these options, you can choose the best strategy for SEO on catalog's default options. Magenta gives the administrator the opportunity to tune these options on catalog pages. We will work this out later in this chapter.
Magento automatically generates an XML sitemap for your store and also keeps it up to date. In order to enable this, navigate to Stores | Configuration | Catalog | XML Sitemap. Magento has the following options for this section:

Basically, with these options, it is possible to choose the frequency and priority of updates. You may set additional options, such as Start Time and Error Notifications, only in the GENERAL settings tab. It's important to configure the cron job functionality in your web server to enable this feature.