Deploys implement minor changes, and bug fixes. Deploy changes that have relevance to UWM are published in monthly release summaries.
Canvas - LMS: Maintenance Window (12/16/2021 1:05 AM to 12/16/2021 3:05 AM)
During pre-scheduled maintenance windows, Instructure may conduct maintenance that can degrade Canvas performance. If an outage is expected, this calendar will be updated, and a notice will be posted on the UWM Canvas website.