How to Do Keyword Research? Guide from A to Z

What is Keyword Research and Why is it Considered the Foundation of SEO?

Keyword research is the process of systematically discovering what queries your target audience is typing on Google, analyzing the volume, competition level and search intent of these queries, and then shaping your content strategy based on this data. If this process, which is considered the "compass" of SEO, was skipped, your content would be lost in topics that no one is looking for.

According to Ahrefs research, 96.55% of pages on the web receive zero organic traffic from Google. The main reason for this is either no keyword research has been done or the wrong targets have been chosen.

Step 1: Start with Seed Keywords

Seed words are short, broad terms that describe your industry or service. You can use three sources to find them:

• Brainstorm: How would someone search for your product or service on Google? Ask yourself this question and create the list.
• Google Suggest and Related Searches: Type your seed word into the Google search bar and save autocomplete suggestions as new word ideas.
• Competitor analysis: Identify the keywords your competitors are ranking for with Semrush or Ahrefs. Opportunities not covered by you are hidden here.

Step 2: Analyze Search Volume

Search volume shows the average number of searches for a word per month. However, focusing solely on high-volume words sets a trap for beginners:

• High volume = High competition: It may take years to get on the first page for words with 50,000+ searches per month, such as "What is SEO?"
• Low volume ≠ Worthless: Long-tail words, which have 100 searches per month but have a conversion rate of 15%, are the real source of income for e-commerce sites.
• Seasonal trends: Be sure to check the search trend of the word throughout the year with Google Trends. You should know that the word "New Year's gift" is not searched in January.

Step 3: Evaluate Keyword Difficulty Score (KD)

Keyword Difficulty (KD) score expresses, on a scale of 0-100, how difficult it is to rank in the top 10 for a word. Reading this score correctly determines the strategy:

• KD 0-30 (Easy): Even sites with low Domain Rating can be ranked within 3-6 months. It is the ideal starting point for new sites.
• KD 30-60 (Medium): With quality content and medium backlink profile, results can be achieved within 6-12 months.
• KD 60-100 (Difficult): Strong Domain Authority requires comprehensive content and authoritative backlinks. It is recommended not to target new sites in the short term.

Step 4: Determine Search Intent

In today's SEO, mismatching search intent invalidates all other optimizations. Google is extremely skilled at understanding what the user wants:

• Informational Purposes: "How to do keyword research" → Guide, training, explanation expect content.
• Navigational: "Semrush login" → There is an intention to go directly to a site.
• Commercial Investigation: "Best SEO tools 2026" → In the process of comparing options.
• Transactional: "Ahrefs price" → Searches with the intention of buying or trying.

Determine the dominant intent type by looking at current results in the SERP. Blog posts, product pages, video results? Your content must be compatible with this.

Step 5: Do Keyword Clustering

Targeting a single keyword for a single page is the old strategy. Modern SEO requires targeting semantically related keywords in clusters with a single piece of content:

• Main word: "keyword research"
• Cluster words: "keyword research", "keyword analysis", "word puzzle", "search volume inquiry", "keyword difficulty"

When you process this set naturally within the same content, you reach the potential to rank for dozens of words on a single page.

Step 6: Prioritize Results and Arrange in Your Content Calendar

You can't target all words at once. The prioritization matrix should be:

• Priority 1: Low EV + medium-high volume + high commercial intent. These are "golden opportunities".
• Priority 2: Medium LOE + high volume + informational intent. It builds topical authority.
• Priority 3: High KD + very high volume. Place them on the calendar as long-term goals.

Free Tools You Can Use

• Google Keyword Planner: Essential tool for search volume estimates and related word suggestions.
• Google Trends: Analysis of seasonal trends and regional differences.
• Google Search Console: The gold mine where you discover which words your site is already showing on.
• AnswerThePublic: An excellent resource for question-based keyword discovery.

Frequently Asked Questions

How often should keyword research be done?

You should review your existing words and search for new opportunities at least every 3 months. A monthly update is recommended in rapidly changing sectors (technology, finance).

Can content be written for a word with zero search volume?

Yes, it is valuable if it is a new term with potential for future growth or if it is a very specific but high-converting long-tail word. Be sure to do trend analysis.

Should I target the same word if my opponent is very strong?

Instead of directly targeting the same word, build gradual authority by targeting sub-branches (long-tail variations) of that topic. For example, set specific goals such as "e-commerce SEO checklist" instead of "SEO".

Start using our free SEO tools to strengthen your keyword strategy today!