Influencer marketing has become a cornerstone of SMM in Indonesia. Brands are increasingly collaborating with micro and nano-influencers who, despite having smaller follower counts, offer higher engagement rates and more authentic connections with niche audiences. These influencers are particularly effective in sectors like beauty, fashion, and lifestyle, where personal recommendations significantly impact consumer decisions. Platforms such as Instagram, TikTok, and YouTube are the primary channels for these collaborations, enabling brands to reach targeted demographics with tailored content.