Of course, there is a lot more that needs to be considered but this is a simple example of how all of these things work together. I would recommend having no less than one page for each step of the organic marketing plan if you are a small business. The larger your business the more planning that you should do. If you do not think through all the details you will miss something that will cost you.
By 2004, search engines had incorporated a wide range of undisclosed factors in their ranking algorithms to reduce the impact of link manipulation. In June 2007, The New York Times' Saul Hansell stated Google ranks sites using more than 200 different signals.[25] The leading search engines, Google, Bing, and Yahoo, do not disclose the algorithms they use to rank pages. Some SEO practitioners have studied different approaches to search engine optimization, and have shared their personal opinions.[26] Patents related to search engines can provide information to better understand search engines.[27] In 2005, Google began personalizing search results for each user. Depending on their history of previous searches, Google crafted results for logged in users.[28]
SEO may generate an adequate return on investment. However, search engines are not paid for organic search traffic, their algorithms change, and there are no guarantees of continued referrals. Due to this lack of guarantees and certainty, a business that relies heavily on search engine traffic can suffer major losses if the search engines stop sending visitors.[60] Search engines can change their algorithms, impacting a website's placement, possibly resulting in a serious loss of traffic. According to Google's CEO, Eric Schmidt, in 2010, Google made over 500 algorithm changes – almost 1.5 per day.[61] It is considered wise business practice for website operators to liberate themselves from dependence on search engine traffic.[62] In addition to accessibility in terms of web crawlers (addressed above), user web accessibility has become increasingly important for SEO.
Audience insight.  The better you know your customers’ pain points, the more tailored your offers will be. The more you’re connected with how they feel, the more succinct and impactful your messaging will be. I can’t think of one aspect of marketing that isn’t strengthened by that depth of audience research.What does organic traffic have to do with it?  When you dissect your traffic, here’s what happens.
Kristine Schachinger has 17 years digital experience including a focus on website design and implementation, accessibility standards and all aspects of website visibility involving SEO, social media and strategic planning. She additionally specializes in site health auditing, site forensics, technical SEO and site recovery planning especially when involving Google algorithms such as Penguin and Panda. Her seventeen years in design and development and eight years in online marketing give her a depth and breadth of understanding that comes from a broad exposure to not only digital marketing, but the complete product lifecycle along with the underlying technology and processes. She is a well known speaker, author and can be found on LinkedIn, Google+ and Twitter.

Well, yes and no. Sure, you can get hit with an algorithm change or penalty that destroys all your traffic. However, if you have good people who know what they are doing, this is not likely to happen, and if it does, it is easy (in most cases) to get your visits back. Panda and Penguin are another story, but if you get hit by those it is typically not accidental.