Why does fairy beat dragon?

In Pokémon battles, Fairy-type moves are effective against Dragon-type Pokémon because of the inherent strengths and weaknesses defined by the game's mechanics. Fairy-types were introduced to provide a counter to the powerful Dragon-types, making the game more balanced. Additionally, Fairy-type moves deal double damage to Dragon-types, allowing Fairy Pokémon to have a strategic advantage in battles against them. This dynamic adds depth to team composition and strategy in Pokémon gameplay.