Paid reach means the number of people who see your content because you paid for it, like running an ad on Facebook or Google. Organic reach means the people who see your content naturally, without any money being spent, because they searched for it, followed your page, or someone shared it. Organic reach takes more time to build but can last longer and cost nothing once it is established. Paid reach gives faster results but stops the moment you stop paying. Most businesses use both to balance speed with sustainability.