Pay-per-click (PPC) campaigns generate paid traffic. The goal of running a PPC ad campaign is to increase visibility of and traffic to your website by showing up in the paid search results – you can identify ‘paid’ results easily as they are brief advertisements separate from the organic results. These ads are prompted when a user types in a relevant keyword into the search engine.
When used correctly, PPC can be highly efficient. Since you only pay when people click and you can target people looking for specific terms, it can be an excellent means of bringing people to your site. Even more importantly, PPC ads have been shown in some studies to even boost visibility and clicks, particularly if your organic result starts to slip further down the page. This can help improve brand reach and maintain a strong reputation.
With organic search, you don’t have to outspend your competitors to outrank them. Your competitors can’t recreate the content experience that you use to drive organic traffic.  This one is major. PPC is easy to replicate and reverse engineer. Many spy tools allow you to dissect paid campaigns to see what’s working and what’s not. You can get insight into what ad creatives generate the most clicks.
To do this, I often align the launch of my content with a couple of guest posts on relevant websites to drive a load of relevant traffic to it, as well as some relevant links. This has a knock-on effect toward the organic amplification of the content and means that you at least have something to show for the content (in terms of ROI) if it doesn't do as well as you expect organically.
In some contexts, the term SEM is used exclusively to mean pay per click advertising,[2] particularly in the commercial advertising and marketing communities which have a vested interest in this narrow definition. Such usage excludes the wider search marketing community that is engaged in other forms of SEM such as search engine optimization and search retargeting.
Website owners recognized the value of a high ranking and visibility in search engine results,[6] creating an opportunity for both white hat and black hat SEO practitioners. According to industry analyst Danny Sullivan, the phrase "search engine optimization" probably came into use in 1997. Sullivan credits Bruce Clay as one of the first people to popularize the term.[7] On May 2, 2007,[8] Jason Gambert attempted to trademark the term SEO by convincing the Trademark Office in Arizona[9] that SEO is a "process" involving manipulation of keywords and not a "marketing service."

On October 17, 2002, SearchKing filed suit in the United States District Court, Western District of Oklahoma, against the search engine Google. SearchKing's claim was that Google's tactics to prevent spamdexing constituted a tortious interference with contractual relations. On May 27, 2003, the court granted Google's motion to dismiss the complaint because SearchKing "failed to state a claim upon which relief may be granted."[67][68]
Anchor text is the visible words and characters that hyperlinks display when linking to another page. Using descriptive, relevant anchor text helps Google determine what the page being linked to is ?about. When you use internal links (links on web pages that point to other pages on the same web site), you should use anchor text that is a close variation of your target keywords for that page, instead of phrases like click here or download here . But at the same time, avoid overuse of exact match keywords. Using close variations will help you rank better for more keywords.

There are also a few more similarities. All of these marketing methods are measurable to an extent never seen in any other media. Every click can be measured – where and when it came – and followed through to the conversion, the sale and the lifetime customer value.  This feedback loop creates optimization opportunities that can create huge incremental improvements in your SEM campaigns.
We also saw for the first time a seasonally adjusted drop, a drop in total organic clicks sent. That was between August and November of 2017. It was thanks to the Jumpshot dataset. It happened at least here in the United States. We don't know if it's happened in other countries as well. But that's certainly concerning because that is not something we've observed in the past. There were fewer clicks sent than there were previously. That makes us pretty concerned. It didn't go down very much. It went down a couple of percentage points. There's still a lot more clicks being sent in 2018 than there were in 2013. So it's not like we've dipped below something, but concerning.

In March 2006, KinderStart filed a lawsuit against Google over search engine rankings. KinderStart's website was removed from Google's index prior to the lawsuit and the amount of traffic to the site dropped by 70%. On March 16, 2007 the United States District Court for the Northern District of California (San Jose Division) dismissed KinderStart's complaint without leave to amend, and partially granted Google's motion for Rule 11 sanctions against KinderStart's attorney, requiring him to pay part of Google's legal expenses.[69][70]
In 2014, BrightEdge published research that showed that 51% of channel traffic came from organic search and that it was far and away the largest channel. In the intervening years there were significant search algorithm changes that dramatically altered the layout and ranking of the search engine results pages and saw an increase in the space taken by Local, Videos, Images, Ads, and Quick Answers.

Use long tail keywords. Don’t just go with the most popular keywords in your market. Use keywords that are more specific to your product or service. In time, Google and other search engines will identify your website or blog as a destination for that particular subject, which will boost your content in search rankings and help your ideal customers find you. These tools will help.

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?
Organic social media is anything that happens on social media without paid promotion. When you post as your page but don’t put any money behind this post to “boost” it, you are creating an organic post. If you comment on a business’s post in your news feed, and the “Sponsored” tag does not appear on the post, that action qualifies as organic. In other words, organic actions occur on non-ads.
Remember when you used to rely solely on search engines for traffic? Remember when you worked on SEO and lived and died by your placement in Google? Were you #1? Assured success. Well, okay, maybe not assured. Success only came if the keywords were relevant to your site users, but it was the only real roadmap to generating site traffic and revenue.