Template-Driven Form is a simpler and more declarative approach where the form structure and validation rules are defined directly in the HTML template. The form controls are bound to the model using two-way data binding. This approach is suitable for simple forms with basic validation requirements. It is easy to implement and requires less code. However, it may become complex and hard to maintain for larger and more complex forms.On the other hand, Reactive Form is a more flexible and reactive approach where the form structure and validation rules are defined programmatically in the component class. The form controls are created dynamically using FormBuilder and FormControl classes. This approach provides more control and flexibility over form validation and allows for complex validation scenarios. Reactive Forms are suitable for larger and more complex forms with advanced validation requirements. Although it requires more code and a steeper learning curve, it offers better maintainability and testability.