Every minute of Time per stop is added to the running clock as the driver works down the route, so each stop's ETA reflects both travel time and the time spent delivering the stops before it. More realistic ETAs mean fewer missed windows and better customer notifications.
Service time also counts toward Max route duration: if adding stops would push a route past your cap, optimization splits the work into additional routes instead of overrunning. Applies to both EasyRoutes for Shopify and EasyRoutes for Web.