[bryanbell]

On page SEO optimization as the name suggests it is a technique to do the optimization of the website pages in which following techniques are included

Title and Meta tags optimization
Header tag optimization
Image optimization
Content optimization with proper keyword density
URL structure
Internal linking structure
Page segmentation
Sitemap Creation
Robots.txt
Page segmentation
Integrate Google Analytics and Web Master Tools of Google, Bing

These all techniques are included in on page optimization, competitor website analysis and keyword research these techniques are also included in on page optimization which we have to do first then after we can start above mentioned processes