Any regression type defects can be spotted early and with a minimal amount of testing as compared to running a single, long regression run at the end of the cycle.

After a time, I spotted my father, sitting alone at a table, stirring his drink with his finger. "I'll be right back," I told Cesar.

If errors are spotted or users lodge complaints, the site must be updated with immediate, localized changes that do not interrupt current site visitors by restarting the server.