The Jetpack Manage module enables you to monitor and manage all of your WordPress sites from a centralized dashboard.
The Jetpack Manage feature lets you manage all of the sites on which you have the Jetpack Manage feature activated from a single interface at WordPress.com. This lets you easily update themes and plugins, as well as manage basic content for all of your WordPress sites in one place.
The Jetpack Manage feature is activated when you setup Jetpack and connect it with your WordPress.com account. To take advantage of this feature, go to WordPress.com/sites and you should see your WordPress.com sites, alongside your Jetpack connected sites.
From this panel, you can manage many of the same things you would from your WordPress admin area, or easily switch to your other sites.
If you have a lot of sites that you want to keep track of, you may find this feature helpful.