The ad auction process takes place every single time someone enters a search query into Google. To be entered into the ad auction, advertisers identify keywords they want to bid on, and state how much they are willing to spend (per click) to have their ads appear alongside results relating to those keywords. If Google determines that the keywords you have bid on are contained within a user’s search query, your ads are entered into the ad auction.
Additionally, knowing how your SEO is performing can help you make the necessary changes over time to keep your rankings high. Look around for a keyword tracking tool to help you track how your SEO is performing. It’s typical for your ranking to fluctuate from week to week and even day to day. Look for a general upward trend from month to month that shows that your efforts are successful.
Search engines use complex mathematical algorithms to guess which websites a user seeks. In this diagram, if each bubble represents a website, programs sometimes called spiders examine which sites link to which other sites, with arrows representing these links. Websites getting more inbound links, or stronger links, are presumed to be more important and what the user is searching for. In this example, since website B is the recipient of numerous inbound links, it ranks more highly in a web search. And the links "carry through", such that website C, even though it only has one inbound link, has an inbound link from a highly popular site (B) while site E does not. Note: Percentages are rounded.
To sum up all of this information, even organic traffic, like direct traffic, has some gray areas. For the most part, though, organic traffic is driven by SEO. The better you are ranking for competitive keywords, the more organic traffic will result. Websites that consistently create content optimized for search will see a steady increase in organic search traffic and improved positioning in the search results. As a marketer, it is important to look at your keywords and high-ranking pages to identify new SEO opportunities each month.
Beyond organic and direct traffic, you must understand the difference between all of your traffic sources and how traffic is classified. Most web analytics platforms, like Google Analytics, utilize an algorithm and flow chart based on the referring website or parameters set within the URL that determine the source of traffic. Here is a breakdown of all sources:
Let’s say, for example, that you run a construction business that helps with home repairs after natural disasters and you want to advertise that service. The official term for the service is “fire restoration,” but keyword research may indicate that customers in your area search instead for “fire repair” or “repair fire damage to house.” By not optimizing for these two keywords, you’ll lose out on a lot of traffic and potential customers, even if “fire restoration” is technically more correct.
Paid marketing, on the other hand, allows business to target, reach, engage, and convert their audiences quickly and directly. Instead of waiting – or hoping – for someone to find your blog post in organic search or on social, paid marketing has you “pushing” content – mainly in the form of ads – directly to your target audiences. As such, it’s much more sales-forward and focused on driving specific actions, like making a purchase or attending a webinar. Here’s an example of this in action:
Search engines: Google vs. Bing. Google was the first search engine that provided better search results and people told others about it so it spread virally and became a verb “Google it”, whereas Bing is trying to buy it’s way into the market, doing ads, deals with Facebook and Yahoo, etc. Most people weren’t asking for a 2nd, “me-too” search engine, the first one solved their search pain and continues to do so, so trust was built and people have remained loyal to it.
The piece on generating demand for branded queries rather than just product-based ones is particularly interesting here. It sounds as though it'll be more important than ever to have a strong brand in order to succeed (rather than just having a well-optimized site -- and ideally, having the strategic, technical, and creative sides all working together cohesively). Perhaps it's possible that brand exposure through things like answer boxes can still deliver some value too, even if it's difficult to measure, and CTRs are diminished?
Google claims their users click (organic) search results more often than ads, essentially rebutting the research cited above. A 2012 Google study found that 81% of ad impressions and 66% of ad clicks happen when there is no associated organic search result on the first page. Research has shown that searchers may have a bias against ads, unless the ads are relevant to the searcher's need or intent 
Influencer marketing is a great way to expose your brand to a much larger audience, which often results in a significant spike in traffic that can lead to more subscribers, followers, and leads. It can also lead to long-term SEO improvement. In this session, you will learn how to leverage influencer marketing to drive organic traffic and rank your website higher.
Organic Search: Organic search results are the listings of Web pages returned by the search engine’s algorithms that closely match the search string of keywords. Marketers use SEO and content assets to get high search engine rankings. The goal is to be on the first page and then move into the top three rankings for specific keywords. That’s because the advantages of organic search are dependent on visibility. The higher the ranking the more pronounced the advantages. They all but disappear if your listing is not on the first page.
I feel we can also focus a lot on the kind of keywords we target. I had a client who was in a very competitive market place, we optimized their site for some really targeted, long tailed keywords which didn’t have very high search volume, so the traffic didn’t really go up drastically but the amount of conversions & the kind of CTRs the site received was incredible.
That's why it's necessary to always stay abreast of developments in the SEO world, so that you can see these algorithm updates coming or you can determine what to do once they’ve been released. The WordStream blog is a great resource for SEO updates, but we also recommend Search Engine Land and Search Engine Roundtable for news on updates. Glenn Gabe of G-Squared Interactive is also a great resource for analyzing the causes and impact of algorithm updates.
Even though we think about it all the time, we usually take a “sit back and wait” approach to traffic. After all, you can’t force anyone to visit your website. But it’s not as simple as “if you build it, they will come.” And you need more traffic, and greater search engine visibility, if you want to get anywhere with your website and your business.
Organic is what people are looking for; the rest of these simply put things in front of people who may or may not be seeking what you offer. We know that approximately X number of people are looking for Y every day. So if we can get on front of those people, we have a much greater opportunity to create long-term relationships and increase our overall ROI.