What is the difference between SEO and SEM and what are their implications?

  The terms SEO and SEM are similar in appearance and are sometimes used incorrectly. Come with us to learn about their differences. The difference between SEO and SEM is very subtle.

The terms SEO & SEM are similar in appearance and are sometimes used incorrectly. Come with us to learn about their differences.

The difference between SEO and SEM is very subtle but noticeable. SEO & SEM mean “Search Engine Optimization” and “Search Engine Marketing” respectively. In the previous articles, you became familiar with the concept of both. But in many cases, the difference between SEO and SEM is not tangible. Follow us in this article for details of SEO & SEM differences.

First, we discuss the concept of SEO and SEM separately.

 What is SEO?

Search engine optimization or SEO is a way to get a better view of search engine results. With the help of SEO, the site grows and is indexed in search engine results on the homepage. One of the most important goals of SEO is to be on the top of search engines (eg Google, Yahoo, Bing, etc.). Therefore, SEO is very important and to take care of a site, one must always adhere to SEO principles.

Here are some of the most important SEO principles:

۱. Title: Use keywords in the page title

۲. Meta Description: Short, legible article on page performance and related keywords

۳. Optimize arrow and midterm: Add keywords to page titles and headers

۴. Internal links: Use internal links on the page

۵. Photo Alternative Text: Using alternate text for photos (the alt photo feature), the search engine reads and rates the photo description. Therefore, it is very effective in ranking keywords.

For a more detailed and accurate understanding of SEO, see the introductory SEO training series. Now let’s talk about the concept of SEM.

What is SEM?

SEM is a generic term that means search engine marketing and its meaning is far more comprehensive than SEO. That is, SEM includes SEO. More on search engine marketing or SEM.

Important SEM strategies include:

1. Content Marketing: Generating text, photos, videos and other visuals that encourage site visitors.

2. PPC: Costs to increase site traffic to search engines, social networks, and reputable global sites. Click-through advertising is banner-based design, click-based, and Google Adwords is paid in dollars, and the cost of the dollar will fluctuate, as well.

3. Social Network Marketing: Creating Free Profiles for Your Business to Promote Users’ Trust and Increase Site Credibility.

4. Email Marketing: Send helpful messages to eligible recipients who want to get information from you and convert them into revenue.

5. Conversion Rate Optimization (CRO): Conversion rate optimization is a structured, structured solution to boost your site’s performance and increase revenue.

Important SEM strategy

Usually, different companies use different strategies to enhance SEM. Because companies move exactly to their needs. For example, a company that has just launched its site uses the PPC method to get the desired result in the shortest possible time, while a company that has been operating online for many years is likely to use the CRO method.

What is the difference between SEO and SEM?

Overall SEM is wider than SEO. SEO delivers better organic search results, while SEM helps search engines drive more targeted traffic to your site. As a result, effective SEM advertising helps your business.

For example, if you are looking for the newest iPhone mobile, SEO will make your site organic for users to rank in the top results of Google and other search engines. But in the SEM service, using paid advertising, your site’s link is featured prominently above or next to organic search results.

The important thing that should not be overlooked is that SEO and SEM do not compete with each other, but together they make the site successful. If you want to have a successful online business, you must first show up in both organic search results and advertising links, so both SEO & SEM are important and applicable.

Which Priority Does SEO or SEM Have?

None of the SEM strategies will succeed without proper SEO. If your site is not ready to be visited (SEO is not appropriate), SEM will not work alone. In other words, SEO first then SEM.

Here’s an example to illustrate the need for SEO and SEM. Many sites turn to SEM to gain rankings in relevant keywords. Here we consider the second strategy, PPC click advertising. Now suppose you spend $ 4 per search engine per user click and if you get 2 hits this way, you should spend a hundred thousand dollars a day. If you were able to attract 2% of them and turn them into customers you would have spent a hundred thousand Tomans on advertising costs. Now if your profit per sale is more than the amount of advertising, you are in the profit system and you can expand it. However, if your profit margin is less than that, you need to think about other advertising to make it profitable.

For PPC advertising to be profitable, you need to improve your CRO conversion rate, which means you can convert more customers into one for 3 site visitors. For example, if you were able to convert 1 out of every 6 people to your customer, then your advertising cost per customer would be reduced to 4,000.

If you focus on the SEO of your site and get results in Google results, you will not pay any direct amount to the search engines and your direct advertising costs will be zero. On the other hand, people who click on Google results are statistically more likely than people to click on ads, with an average PPC to SEO ratio of 1: 1. So focusing on SEO is a priority.

What is the use of SEO and SEM?

Normally, most Internet businesses are advised to use both methods concurrently, especially if they have improved their site conversion rates. However, here are some tips based on corporate experience.

Failing to know which service to use for your business:

  • If you are just starting your own business, first build your site with SEO, then with SEM.
  • If you have a certain amount of organic traffic but the conversion rate is low, definitely think of SEO.
  • If the conversion rate is great, but you have a low traffic, SEM is your solution.

Last but not least, SEO or SEM should never be used alone. In this article, you are familiar with the difference between SEO and SEM, and we knew that SEO was definitely for every site until the end of that site’s life, even if it came first in all of the site’s keywords. SEM is right after SEO, but it takes both to be successful with a little bit of intelligence.

Join us Online Library to learn about the various aspects of SEO and SEM and follow our series of educational articles to grow your business.


Working with digital marketing, SEO services, and website design with a highly experienced team for years, َAvenger IT Next Generation has been able to meet the needs of people in various businesses and help businesses grow. Continuously updating their level of knowledge and exploring different markets has surpassed the pioneers in this field and incorporate successful experiences into their careers.

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