Are you wondering “what is SEO?”
If so, you must be brand new to digital marketing, which means I need to catch you up ASAP!
In this article, we’ll do a deep dive into what SEO is, where it came from, and most importantly, why it matters so much to marketers.
What We’ll Cover:
- What is SEO: The Basics
- What is SEO: Why SEO Matters
- What is SEO: On-Page vs. Off-Page SEO
- What is SEO: The SEO Evolution (From Black Hat to White Hat)
- What is SEO: Google Algorithm Updates and SEO
- What is SEO: Inside Search Engines and How They Rank
- Content and SEO
- Link Building and SEO
- Authority, Trustworthiness, and SEO
- Social Media and SEO
- What is SEO: A Quick Guide to Optimization
- Frequently Asked Questions
What is SEO: The Basics
SEO is the process of optimizing material—whether it’s content on your website, a social media post, or a video you produced—for search engines.
All of this optimization is done organically, which means the traffic you get from your optimization efforts is all free.
This is an important distinction. If you’ve had much interaction with search engine results pages (SERPs),which, statistically and realistically speaking, you absolutely have, then you know the SERPs are typically separated into organic and paid results.

What is SEO: paid results

What is SEO: organic results
With SEO, we’re going for organic. These are based entirely on your own efforts, and how well each search engine thinks your content matches a specific search query. There are no money changing hands here, and paying doesn’t rank you higher in the organic results.
All of your major search engines like Google, Bing, and Yahoo rank websites and content according to their own optimization algorithms.
They do so by using “spiders” to crawl your site, finding optimized pages, and adding them to their index. Then, when people perform searches, Google uses that index to find the most relevant piece of content for the given search query.
Paid results, on the other hand, exist outside of organic results. Their positions are paid for, not optimized for, and they generally appear at the very top of the results page. These fall under the SEM, rather than the SEO, category.
What is SEO: Why SEO Matters
SEO matters because frankly, search engines matter.
It’s where people turn when they need answers, information, or just to kill time.
And because so many people use them, they’re a huge source of traffic for the majority of websites.
In the graphic below, SparkToro breaks down how referral traffic is divided between sources.
As you can see, almost 60% of web traffic comes from Google alone.
And the higher you rank, the more traffic you’ll get.
Here’s what the click-through rate (CTR) looks like by position in the search results:
- Position 1 – 20.5%
- Position 2 – 13.32%
- Position 3 – 13.14%
- Position 4 – 8.98%
- Position 5 – 9.21%
- Position 6 – 6.73%
- Position 7 – 7.61%
The top position gets about 20% of all traffic from Google.
Think about it–the higher your page ranks, the higher the click-through rate (CTR) will be. Generally, users don’t want to scroll through pages of results. They want the best answer, at the very top of the page.
Luckily, Google’s pretty good at delivering just that.
So, why does SEO matter?
Because without it, you’ll never get to that top spot–or even close.
Even if you make it to the first page, you’ll still be missing out on almost half of all search engine traffic if you’re not in the first three spots.
Sounds harsh, I know. But keep in mind–SEO is a long-haul game. Your site probably won’t rank on the first pages initially, but if you keep optimizing and improving it, you’ll keep creeping up in the rankings.
What is SEO: On-Page vs. Off-Page SEO
When it comes to SEO, there are two types we usually talk about–on-page and off-page.
That said, most of that talk surrounds on-page SEO.
On-page SEO refers to anything you do to optimize the content and HTML portion of a page. It’s the things you see and control, which includes making sure your copy is unique and informative, using proper meta tags and headers, and optimizing your images.

What is SEO: On-page SEO checklist
Off-page SEO, on the other hand, happens outside of your page.
Mostly, that means link-building. And these off-page efforts have a big effect on your overall relevance, trustworthiness, and authority.
That’s a pretty big deal, and we’ll cover it more momentarily.
Now, there’s another SEO aspect that technically falls under on-page, but is often assigned its own category.
That’s technical SEO.
Technical SEO is the behind-the-scenes stuff–anything that happens outside of the content itself. This could be slow page load times, duplicate content issues, broken links, or improper redirects.
For your SEO to work and continuously maintain or move up in rankings, all of these aspects need to work together.
What is SEO: The SEO Evolution (From Black Hat to White Hat)
SEO is serious business today.
And as we’ve covered, websites stand little chance of being recognized without out it. But before we get into what matters in SEO today, let’s take a look at where it came from.
Web pages themselves have a relatively short history (the first was created in 1991 and it’s still live today!)
Back then, and throughout most of the early ’90s, there wasn’t much competition, meaning there wasn’t much need for SEO.
But as more sites began to pop up, so did search engines like Yahoo (in 1994) and Google (in 1997).
As that happened, the need for sites to differentiate and make themselves known to these search engines arose. Enter SEO.
But before on-page, off-page and algorithm updates, it was a system with few rules and far fewer ramifications.
That lack of rules created a “wild west” attitude that quickly gave rise to Black Hat SEO–the practice of using tactics against search engine guidelines to improve rankings.
These tactics included keyword stuffing, hidden text or links, guest posting networks, spammy backlinks, link farms, and creating domains with duplicate content.
Back in the day, these kinds of tactics often guaranteed a site would skyrocket to the top of the search results. Because of this, those sites that practiced clean, White Hat SEO were often bumped.
And eventually, search engines caught on.
(Shameless plug: if you’re interested in learning more about the evolution of SEO, I made a whole movie about it. Check it out here.)
What is SEO: Google Algorithm Updates and SEO
Google–which quickly established itself as the major search engine in town in the early 2000s–combatted Black Hat SEO by introducing a number of updates to algorithm.
Anyone experienced with SEO knows that Google updates happen often, and some are wider felt than others.
Here are a few that majorly rocked the world of SEO and how we go about it today:
- Panda, February 2011–This one was major and targeted low-quality, thin content. Panda ultimately impacted 12% of rankings, and was a game-changer as far as how we produce content today (stay tuned for more on that).
- Penguin, April 2012–Targeted irrelevant or spammy links, and is now also officially part of Google’s core algorithm; made the inclusion of high-quality, relevant backlinks an important part of SEO.
- Hummingbird, August 2013–Penalized sites for keyword stuffing and low-quality content, and overall helped Google better interpret search queries and searcher intent.
- RankBrain, October 2015–Google’s machine learning system that became one of its most important ranking factors; made optimizing for relevancy and related concepts an important part of SEO.
- Fred, March 2017–Penalized thin content; also speaks to the growing importance of comprehensive content in SEO.
- Medic, August 2018–While Google’s been tight-lipped about this one, it appears to target sites with low E.A.T (expertise, authoritativeness, trustworthiness), pointing towards Google’s growing favoritism of established, trustworthy content.

What is SEO: Major algorithm updates
What is SEO: Inside Search Engines and How They Rank
So, now that we know how SEO has evolved, we can talk about what matters most today.
First thing–Google uses over 200 ranking factors in its algorithm.
That’s a lot to consider when creating a site. But luckily, we know that a few matter more than most.
And even without an official list from Google, we can tell from the tactics its algorithm updates have targeted that it takes quality content, links, and trustworthiness very seriously.
This is on par with most industry studies have found.
According to them and Google insiders, the most important ranking factors are:
- Content
- Backlinks
- RankBrain
There are plenty of others to consider as well, and we’ll touch on a few of them below.
And, though we’re focusing primarily on Google, keep in mind that most search engines use similar factors when indexing content.
Content and SEO
Low-quality, thin content has been the subject of many of the above algorithm updates and continues to be one of the biggest determiners in how well a site will rank.
Specifically, they’re looking for content that’s relevant and authoritative.
How do you achieve that?
First, you make sure you’re targeting and optimizing for keywords that your target audience is searching for.
Then, you make sure your content is as in-depth and packed with plenty of useful, unique information.
This is why producing long-form content is so important. Long-form (generally, anything over 1,500 words) is seen as more comprehensive and more likely to address a topic completely, and therefore often ranks higher than shorter pieces.
But now more than ever–especially with the updates from Hummingbird and RankBrain–an emphasis is being put on semantic, natural search and language.
Instead of filling a piece with keywords, natural language and longer search phrases are winning out.
Google is all about finding the most relevant answer to a search query, and as its capabilities expand, it’s able to recognize more subtleties in content–beyond just blatant keywords.
For marketers, that means focusing on producing content optimized for the reader, not the search engine.
Link Building and SEO
Link building has been an important SEO factor since the beginning.
But as we know from updates like Penguin, Google is constantly getting better at spotting the differences between high-quality links from low-quality.

What is SEO: Backlink signals
In Google’s eyes, a link to your content counts as a vote. If it’s from a site with a poor reputation and domain authority, that vote could count against you.
But if that link comes from a high-quality, reputable site, it will count in your favor.
The more votes you have in your favor, the more trustworthy Google will view your site. And the more trustworthy it is, the more likely Google is to rank it well for related queries.
To get these links, you need a strategy.
The core of that strategy will rely on creating high-quality content and promoting it consistently to the right people. When the “right” people find it (those with authority in your niche), they’ll link back to it if it’s quality enough.
Other ways to proactively get backlinks include outreach campaigns, guest posting, and viral campaigns. More on that here.
Authority, Trustworthiness, and SEO
The better your content, the more authoritative it will appear, and the better your links, the more trustworthy.
With the Medic update, even more emphasis seems to have been placed on these factors, especially if you operate a site that deals with sensitive or highly academic information (think sites that give financial or medical advice).
In that case, many suggest factors like an About Us page, author bios, and content from well-known or respected authors, and a solid collection of reviews could help your site’s E.A.T.
Social Media and SEO
Everyone wants to know what effect social media will have on their search rankings.
The thing is–social media itself is not a ranking factor.
But, it does affect your rankings indirectly. More specifically, any links you get from social media do have an effect.
A recent 2016 study from SearchMetrics had this to say:
“The correlation between social signals and ranking position is extremely high … The top-ranked websites in Google’s rankings displays vastly more social signals than all other pages…. This is primarily due to the overlap between brand websites performing strongly in social networks and being allocated top positions by Google.”
So it stands to reason that the more links you’re getting on social media (from high-quality sources), the higher you might rank.
Another thing to remember–social media is more of a factor when it comes to Bing SEO than on Google.
What is SEO: A Quick Guide to Optimization
I’ll be brief here, but don’t worry, I have full optimization formulas for you in this in-depth article.
After all of this, you’re probably wondering where to start when it comes to SEO.
First, you need to find which keywords are ranking on the first page. A good research tool is key here (again, I recommend SEMrush and it’s Keyword Magic Tool).
Find which keywords are ranking highest in your niche, and create a piece of content around each keyword.
Then, create content optimized to Google’s standard fact-driven, authoritative, long-form content.
Focus on making yours the most informative and in-depth article around that keyword, and you’ll have a good chance of higher rankings.
Next, you’ll need a good backlink strategy in place. The number of high-quality links your content produces is a huge ranking factor for Google.
When the content’s ready, it’s time to create some serious buzz. That means promoting all over social media, in your emails, and through direct outreach. Your goal is to get as much traffic and as many eyes on your content as possible.
Part of creating buzz is just creating as much content as possible–the more content, the more likely something is to hit the jackpot. Just remember that more content doesn’t mean lower quality. As we’ve seen, quality, in-depth content wins at the end of the day.
So if you’re dealing with quantity vs. quality, always go with the latter.
And finally, continuously go back and update any content that performs well. Even if you hit first page rankings, there’ no guarantee you’ll stay there. To ensure you do, periodically refresh with new information, insights, or FAQs.
Wrapping Up
Hopefully, you know a little more about what is SEO and why it matters.
Have any other questions? We’ve got answers. Let us know in the comments.
Frequently Asked Questions
What is SEO?
SEO is the process of optimizing your online content so it has a better chance of being discovered through a search engine’s organic search results.
What does SEO stand for?
SEO stands for search engine optimization.
How do you do SEO?
Important SEO ranking factors include having a secure website, a strong brand presence, a positive user experience, and engaging content. You also want to make sure you’re driving links to important pages so you can grow your overall website authority.
How does SEO work?
This depends on the type of SEO you’re focusing on. Some of the most popular include local SEO, international SEO, general content marketing SEO, and e-commerce SEO.
In general, SEO involves trying to get your website to rank higher on Google for key terms you’re going after with the goal of earning more traffic and conversions.
How do you improve SEO?
To improve your SEO efforts, you need to have an authoritative website where your content is refreshed on a consistent basis and has the right intent for the user.
What is an SEO audit?
An SEO audit is an evaluation of your website. Typically, an SEO professional will analyze your search engine friendliness and make suggestions for improvement.
What is SEO consulting?
SEO consultants tell you what steps you need to take to boost your SEO both online and offline.
What is SEO content?
The type of content you create on a blog, home page, product page, category page, and service page are all reviewed by Google according to their intent, keywords, and authority. Google will then rank your website higher or lower accordingly.
SEO content is specific content formulated in an exact way so users can more easily find you on search engines.
What is SEO copywriting?
An SEO copywriter uses SEO strategies to craft copy that helps increase a website’s search engine ranking.
What is SEO blogging?
This is the practice of optimizing your blog’s content and site architecture for search engines.
How much does SEO cost?
SEO costs depend on various factors.
For example, you could pay someone $10 per month to build a few directories for you or up to $100,000 a month to manage 10 different million-dollar websites for you.
Generally speaking, SEO costs between $5,000 and $15,000 per month for most medium-sized websites that produce between $5 million and $1 billion per year in revenue.
What is local SEO?
Local SEO is a branch of SEO that refers to the process of getting an HTML page ranked within a city and the Google My Business page ranked inside of the maps.
This is important because some businesses have hundreds or thousands of locations and local SEO allows each location to target local customers.
How do you find keywords for SEO?
You can use tools like the Google Keyword Planner, Google Search Console report, Bing Webmaster Tools report, SEMrush, and SpyFu to find keywords.
What are SEO tools?
Some of the most popular SEO tools include Moz, SEMrush, Google Search Console, Screaming Frog, and Pitchbox.
What is an SEO service?
This is a service offered by an SEO agency that handles all activities related to SEO, including reporting, SEO dashboards, recommendations, link-building, and content creation.
Is SEO dead?
Absolutely not. In fact, SEO is one of the most important digital marketing channels out there.
How can you become an SEO expert?
Ignite Visibility offers an SEO class that you can attend at UCSD or you can check out the Ignite Visibility YouTube channel to learn more about SEO.