What's better Intermittent Fasting or Keto?

The keto diet:

When we're talking about keto, we're talking about low-carb. You could do keto with zero carbs, but most people do a small number of carbs (20-50g). Every time you eat, no matter what you eat, you will stimulate GIP. GIP triggers a spike in insulin.  With the keto diet, you will stimulate certain genes that will help you in various ways. With ketosis, you will have some autophagy, but not as much as you would with fasting.

Fasting:

With fasting, you're not eating any carbs because you're not eating anything at all. Because you're not consuming any carbs, you will have a lot more ketones than if you were doing keto. When you're fasting, you will not stimulate GIP. When you're fasting, you will enhance genes that have to do with survival, anti-aging, and longevity. This will also benefit the brain and heart. You're also going to get much more autophagy. 

Initially, when you compare fasting and keto, you can see that fasting has a more powerful impact on your health than just ketosis. However, I think it's best to combine fasting and keto together. This way, the benefits will be enhanced. Doing one will actually help the other. Combing the two will make doing both keto and fasting easier. It will also help you reach your health and weight loss goals much faster.