Both have potential, but it depends on your goals. SEO builds long-term organic traffic - slower to kick in, but compounds over time. SMM gives faster visibility and engagement, especially for brand awareness or trending products. For most businesses, the sweet spot is using SMM to test messaging and drive quick wins, while investing in SEO for sustainable growth. Don't pick one forever - start where your audience hangs out, then expand. Traffic source matters less than having a solid offer and clear conversion path. Test, track, double down on what works.