CanDeactivate guards prevent users from accidentally leaving routes with unsaved changes by prompting for confirmation before navigation. As the creator of CoreUI with extensive Angular development experience since 2014, I’ve implemented CanDeactivate guards in numerous form-heavy applications to prevent data loss. The most effective approach creates a generic guard that components can implement to control when they can be deactivated. This pattern provides excellent user experience by protecting against accidental data loss while maintaining flexible navigation control.

CanActivate guards provide route-level protection in Angular applications by controlling access based on authentication, authorization, or custom business logic. As the creator of CoreUI with extensive Angular experience since 2014, I’ve implemented CanActivate guards in countless enterprise applications for security and access control. The most robust approach implements the CanActivate interface with conditional logic that returns boolean, Observable, or Promise values. This pattern enables fine-grained route protection while maintaining clean separation between routing and business logic.