Search Engine Optimization is the process of increasing the visibiltiy of your site. There are two types of optimization one is On page and other is off page optimization. On page seo is the way of optimizing website to rank better in SERP.
Few on page techniques which play a big role in search engine rankings are proper title tag, meta keywords, meta descriptions, friendly url structure, rich header tags, unique and quality content, alt attributes for images and videos, including LSI keywords and internal linking. These techniques are the important aspects which can be optimized carefully based on the keyword analysis of the website.
Concentrating on these techniques is extremely important to the search engines. Implement all the on page seo friendly elements into a website to increase your page rankings and get more traffic for your site.