A website is a set of documents that bring information to countless people all over the world. Understanding an entire site is the only way you can make it more useful and therefore bring traffic. Search Engine Relevancy is about topic clarity and improving on relevant information for visitors and the engines. Knowing that can you really expect a site to be "optimized" in a few months?
Resources grow naturally over time into authorities of topics. Everything needs time to become better. The only way to fully improve a website is to know the ins and outs of the entire site. This way you can identify weak areas or unthemed areas. An easy way to recognize a weak are of a website is as you are reading through it you might notice the sense of "not knowing where to go next". This is where you try to answer that question in a relevant way. Search engines will notice the growth as a natural progression. This is ultimately the goal and proper path to keyword relevancy. It might not even be a matter of answering the question rather you might simply just need to point the user to the exiting answer. This is called external link theming. Simply put, relevant page should be linked together to better help answer the questions of your visitors.
All of this improvement will become several months of gradual site growth. Gradual or natural site growth is a red flag for proper site relevancy. This is what the search engines like and what the users need. Do not just stuff keywords on top level pages and hope the engines will like what they see. It takes site wide relevancy to bring traffic and search engine rankings.
The Full Search Relevancy Philosophy
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