Hidden pages is a search engine marketing strategy where in if you change the content of a web page of your website, even the old page is not discarded by the Google search engine and is still considered by the Google when it performs a scan operation. These pages might not have links readily visible on a main page or on the home page but they can have a big role to play in search engine optimization. These can be great in order to attract keywords and ensure that you have a lot of search engine friendly keywords that you can use on your site content. With hidden pages the job of optimizing your site for the search engine is a lot easier without making your site not so user friendly or too much cloaked with content.
If you own a website, you constantly update the web pages. Once you update the web page, you re submit the site map to the Google search engine so that the Google has all the latest pages in its server. It is necessary that once you update the web pages, you submit the site maps to the Google search engine otherwise it will not have an access to the newer web pages of your site and hence it will work against the search engine marketing campaign of your site.
But when you submit new web pages, the older versions of those pages are not discarded. What Google does is it instead created a copy of your web pages in its server and stores even the older versions of a particular web page. This is good for search engine marketing of a website. When the Google is searching the web server for relevant web pages, it even considers those pages that have been re-written. Thus, even if those pages have relevant information, the link of your site is returned. This is favorable to your search engine marketing procedure because your site gets more exposure and is considered even if your current web pages do not have the relevant keywords.
If a user accesses a web page and then switches to another page, the URL of hidden page is submitted to the Google server which then indexes even those web pages. This is how Google gains an access to the hidden web pages. Hidden pages technique used by a search engine is a good tool and it helps the search engine marketing of the website.
Of course, when implementing a search engine optimisation strategy, it is always best to enlist the services of a professional SEO provider. They can help you develop the best strategies specific to your individual needs and purposes. Do a quick web search (something like search engine optimisation Sydney or SEO Brisbane is probably a good place to start)- this will give you an idea of how many companies there are out there, so shop around and choose the best SEO agency for your needs.