The following are the steps or processes to be followed for on-page optimization,

1. Analyzing the content and optimizing it.
2. Title Tag optimization.
3. META tag optimization.
4. Code Optimization.
5. Title Optimization.
6. Title, keyword, and description.

Need for content optimization in SEO:
The purpose of a search engine’s crawlers to visit your website is to find content.  For example, if it goes for a blog in a website, it will see the title, body, description, and if you have good keywords positioned in the tile, body, and description, it will find relevance in the match, and will index your blog for the specific keywords and store it in it’s database, and whenever a search is made using the specific keywords, you have more chances to be listed in the top.

Need for Code Optimization in SEO:
It is one of the important factors in on-page optimization because it is done to find errors in the codes and script, and rectifying them. The main intent of code optimization is to make the website to be error free.

Need for title tag optimization in SEO:
Title is a crucial factor since it is the first part which will be crawled by the crawlers, and then it moves to the body of the text. Thus, positioning keywords in the title will prove to be very useful.

Need for META data and what is META tag optimization?
META data contains information of the document rather than containing the document itself. For example, if there is a content in a web page, you can set META data for this, of the main or important aspect of the content, it could be a name, a word or a combination of words. META tag optimization is selecting the keywords and feeding it in the META data. It is required since the crawlers from the search engines give importance to META tags as well. The search engines will easily pick up this information from META data and transmit it to the database.