SEO(search engine optimization) improves websites visibility on search engines to increase organic traffic.
While SMO(social media optimization) on the other hand boosts the brand presence on social media to engage users and drive traffic.
Anonymous Answered question

Search engine optimization (SEO) and social media optimization (SMO) are both important for a company’s digital marketing strategy. SEO helps a company’s website rank higher in search engines, while SMO helps a company build brand awareness and drive traffic from social media.