Can you upgrade Laravel without downtime?

Yes. Zero downtime Laravel upgrades are our default approach. The upgrade work happens on a parallel branch with full regression testing in staging. Production cutover uses a blue green deployment or rolling deployment through Forge or Vapor, with database migrations carefully designed to be backward compatible during the cutover window. Queue workers, scheduled jobs, and webhook receivers are all considered in the cutover plan so the application never appears down to users or integrations.