Search Engine Submission
SEO plays major important role to get website indexing fast. When you implement search engine optimization method on your website after that search engines crawl your web pages and if you placed SEO friendly content in your web pages then there is more chances of fast indexing within week rather than waiting for a month.
After viewing your website, the search engines keep a cache copy of every web page in their index. It means when search engines visit any web page, they make a reference copy of every web page and put in their records. When user starts searching on particular keyword, it displays the list of relevant web pages. These first 10 web pages having more important rather than rest of all.