The simple answer is no - search engine submission isn’t necessary. The majority of search engines nowadays (most notably Google) crawl and index pages by following links. Using that logic, a single inbound link from any already-indexed page will identify your page to the engine.
Why SEO is Essential for my Business?
Because, you want more customer and that is possible only when you optimize your website according to Search Engines' requirements.
How Do I Make My Site Search Engine Friendly?
Often, the best way to make your site more search engine friendly is to simply add more text. The content must add value and be on topic, but the addition will create a new set of keywords and phrases for the search engines to crawl. Think of these terms as new ‘gateways’ for the engines - the injection of text will provide new doorways for traffic.
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