The major distinction between SEO and PPC is the click-through rate (CTR). Despite the differences, SEO is a little above PPC in terms of network building, cost efficiency, appropriate optimization, effective way to expand the target audience, and maintaining a high position for a long period of time.
Organic search engine traffic has always been producing higher CTR when compared to paid search ads. This could be a big relief for business people who are looking for the right choice of marketing strategy and a cost-effective one too.
Overall, SEO appears to be the best choice in terms of ROI conversions, long-term & sustainable traffic. SEO being inclusive of all kinds of content such as text, image, video, etc enables itself to create a brand personality & visibility and differentiate from competitors efficiently than PPC.