Ad budget allocation means how you share your money across different platforms like Facebook, Google, or TikTok. Instead of spending everything in one place, you divide your money based on where results are better. This helps you avoid wasting money on ads that are not bringing clicks or sales. For example, if Facebook brings cheaper leads than Google, you can move more budget there. It keeps your spending balanced and focused on performance. How do you decide where most of your budget should go?