A ketogenic diet is all about consuming low carbohydrate and high-fat foods.
By this, you increase your ketones levels and get yourself into the healthy ketosis.
A ketosis your metabolic state of burning glucose for energy changes to burning fat for energy.
This makes the actual difference between ketogenic diet and Atkins or other low carb diets, where people usually get confused.
An Atkins diet is simply focused on consuming fewer carbs without any intention of getting yourself into ketosis.