How to switch deployment slot with out any downtime in app service

How to switch deployment slot with out any downtime in app service deployment slot setting in azure In the left pane, select Deployment slots > Add Slot Note If the app isn't already in the Standard, Premium, or Isolated tier, select Upgrade deployment slot swap with preview Each deployment slot can have its own configuration, such as connection strings and AppSettings values For the configuration settings

deployment slot swap with preview In Azure App Service, certain settings are available to the deployment or runtime environment as environment variables Some of these settings

deployment slot Set up deployment slots to enable zero downtime deployment for Standard workflows in Azure Logic Apps  Press + sign to create a new slot An important note here: under Consumption Plan you can have just one additional slot Add