Susan's team has recommended an application restart for a production, customer-facing application as part of an urgent patch due to a security update. What technical implication is the most common concern when conducting an application restart?

In most production environments downtime is the primary concern when considering an application restart. Many application architectures are designed to allow restarts of individual systems or services without creating an outage or downtime. Configuration changes should not be created by a restart, patches generally apply properly, and security controls should be in place throughout the process.