It is important for a website to have basic SEO this will enable your site to be present on search engine, with this type of SEO your website does not compete for the top spot on search results.
Proper SEO is required if you want to compete with your business competitors, here your website is analyzed page by page, key word are researched, competitive analysis is done, page range is analyzed as well. The web site will have to be submitted to google for indexing and crawling.
ON Site SEO
On-page SEO is the practice of optimizing individual web pages in order to rank higher and earn more relevant traffic in search engines. On-page refers to both the content and HTML source code of a page that can be optimized, as opposed to off-page SEO which refers to links and other external signals.