WP-Cron is being managed by a plugin

There are a few third party plugins available which connect to systems that take over the running of cron events on your WordPress website. When WP Crontrol detects one of these it shows you a message for informational purposes, but there’s no action you need to take other than to be aware of how cron events are processed on your WordPress installation as a result.

Supported plugins

WP Crontrol detects and supports:

• Cavalcade, which runs cron at scale on the Altis Cloud platform by Human Made.
• Cron Control, which runs cron at scale on WordPress VIP by Automattic.

Both of these are scalable, horizontally distributed cron runner systems for WordPress which — unlike the default WP-Cron which relies on web requests to trigger scheduled tasks — run as a daemon on your server and ensure that cron events are executed reliably and on time.

Accordingly, both Cavalcade and Cron Control read from and write to separate database tables instead of storing cron events in the default cron option in the wp_options database table. Their use should be transparent to anybody using WP Crontrol.