Whole SEO process can be divided as two phase.One phase is OFF PAGE SEO and second is ON PAGE SEO.
ON PAGE SEO : Here we focus on meta tag,meta description,page Tittle,content of pages,H1 H2 H3 tag,URL writing to place business keywords within URL,Landing Pages,pages speed .

OFF PAGE SEO : We can increased Inbound Links by blog,article,forum,comment,social bookmarking,social media,press news,online marketing.