An internal linking strategy that works

Internal linking is one of the most powerful tools in SEO that is often underestimated. While everyone focuses on backlinks and external links, it is internal links that give meaning to your site's structure for Google. If you have ever felt that your site's important pages don't rank despite having good content, or that the crawl budget is being wasted, the problem is likely your internal linking. In this article, I will provide a practical internal linking strategy based on three principles: silo structure, page authority distribution, and anchor text selection—no slogans, just examples and clear instructions.

Why Is Internal Linking More Important Than You Think?

Internal linking does three main things: first, it helps Google understand your site's structure and figure out which pages are more important. Second, it distributes page authority (PageRank) among pages. Third, it helps users have a natural path to discover related content. Without internal linking, even the best content can get lost in the depths of your site and never rank.

The important point is that internal linking, unlike backlinks, is completely under your control. You can improve it every day without waiting for anyone. But this control also brings responsibility: if you do it wrong, it can harm your site.

Silo Structure; the Backbone of Internal Linking

Silo structure means organizing your site's content into separate thematic clusters. Each silo has a main topic, and its sub-pages are subsets of that same topic. This structure signals to Google that you have expertise in a specific area and that related pages form a single entity.

How to Build a Silo?

Suppose you have an e-commerce site in the digital devices niche. The silos could look like this:

• Laptop silo: main laptop page, buying guide, model comparisons, reviews of each model
• Mobile silo: main mobile page, selection guide, brand comparisons, repair and maintenance articles
• Accessories silo: main accessories page, headphone buying guide, keyboards, mice

The golden rule is that links should mostly stay within the same silo. An article in the laptop silo should not link to an article in the mobile silo, except in exceptional cases where there is a truly strong semantic connection. This keeps page authority concentrated within the same thematic cluster and helps target pages achieve better rankings.

Pillar Pages and Content Clusters

In each silo, you have a pillar page that contains the most comprehensive and complete content about the main topic. This page should receive links from all cluster pages and link back to all of them. This creates an interconnected network where page authority flows from sub-pages toward the pillar page and vice versa.

For example, if your pillar page is "The Complete Laptop Buying Guide," articles like "Best Laptops Under 30 Million Tomans" or "Intel vs. AMD Comparison" should link to it and receive links from it. This structure is useful for both users and understandable for Google.

Page Authority Distribution; Where to Link and Where Not To?

Page authority (PageRank) is a limited resource. Every link you give from a page transfers a portion of its authority to the destination page. So you need to decide intelligently where to spend this authority.

The Three-Click Depth Principle

A simple but effective rule: no important page should be more than three clicks away from the homepage. That means users (and Google's crawler) should be able to reach any important page with three clicks from the homepage. If a page is at depth four or five, you either need to fix the structure or that page isn't important enough to deserve that depth.

To check this, you can use tools like Screaming Frog. Take its output and check the "Depth" column. Any page with a depth greater than 3 should receive a direct internal link from a page with lower depth.

Where Are NoFollow Links Useful?

In internal linking, using rel="nofollow" is generally not recommended, except in specific cases like "Login" or "Sign Up" links that have no SEO value. However, if you have a page you don't want authority transferred to (like a privacy policy or terms of use page), you can use nofollow. But keep in mind that nofollow doesn't prevent a page from being indexed; it only prevents authority transfer.

Common Mistake: Linking to All Pages Equally

Many sites link to all important pages in the footer or sidebar. This causes page authority to be divided evenly among all pages, and no page can achieve a significant ranking. Instead, place links within the content text and link purposefully to the pages you want to rank. Limit footer and sidebar links to key pages only, such as the homepage and main category pages.

Anchor Text Selection; Smart Link Text

Anchor text is the text you click on to go to the destination page. Choosing the right anchor text helps users know where they're going and signals to Google what the destination page is about.

Types of Anchor Text and Their Uses

• Exact Match Anchor: Exactly the target keyword phrase. Like "internal linking." Use this type sparingly; overuse can signal spam.
• Partial Match Anchor: Contains part of the keyword phrase. Like "internal linking techniques." This type is more natural and you can use it more often.
• Branded Anchor: Your brand name. Like "ServerNet." This type is suitable for links to the homepage and brand pages.
• Natural Anchor: Text that fits naturally into the sentence. Like "in this guide, you'll learn how to…". This type should make up a large portion of your links.
• Naked URL Anchor: The full page address. Like https://servernet.ir. Use this type sparingly.

A Simple Rule for Anchor Text Mix

For a target page, try to follow this mix: about 40% natural anchor text, 30% partial match, 15% branded, 10% exact match, and 5% naked URL. These numbers aren't exact, but they give a general sense of a healthy variety. If all your links to a page have exact match anchor text, Google might see it as an unnatural pattern.

A Practical Example of a Good Anchor Text

Suppose you've written an article about "Best Laptops for Students" and want to link to the pillar page "The Complete Laptop Buying Guide." Instead of writing "click here for more information," write:

If you're still not sure which laptop to buy, read the complete laptop buying guide, which explains all the technical points in simple terms.

In this example, the anchor text "complete laptop buying guide" is a partial match anchor that looks natural and also tells Google what the destination page is about.

Common Mistakes in Internal Linking

Now that you know the principles, let's look at some common mistakes that many sites make:

Broken Links and 404 Errors

If you link to a page that has been deleted or whose URL has changed, users will hit an error page and page authority will be wasted. Periodically check internal links with tools like Google Search Console or Screaming Frog and make sure they all reach valid pages. If you delete a page, always set up a 301 redirect to a related page.

Linking to Low-Value Pages

If you link to pages with thin content or no SEO value, you've wasted page authority. Before linking, ask yourself: "Does this page deserve this link?" If the answer is no, don't link, or improve that page first.

Ignoring Links Inside Images

Links inside images also transfer authority, but their anchor text is usually the alt text. If you use an image link, make sure the image's alt text is descriptive and relevant to the destination page. Otherwise, it's better to use a text link.

Tools and Methods for Auditing Internal Linking

To make sure your internal linking strategy is working correctly, perform these steps periodically:

1. Crawl the site with Screaming Frog and check the depth of each page (goal: maximum depth of 3 for important pages).
2. Check the internal links pointing to each important page and make sure at least 3 to 5 internal links point to it.
3. Review anchor texts and ensure they are varied (without exact match anchors dominating).
4. Check for broken links and incorrect redirects.
5. Analyze user behavior with Google Analytics: if a page has low traffic but many internal links point to it, the problem might be the content, not the linking.

If your site runs on cloud infrastructure or quality shared hosting, crawling and indexing will be better. Companies like ServerNet provide hosting services and cloud infrastructure that can help improve your site's technical performance, but the main focus of this article is on content strategy.

Conclusion; Start Today

Internal linking is not a one-time task; it's an ongoing process. Every time you publish new content, think about how to connect it to the silo structure. Every time you update a page, review its internal links as well. By following the three principles of silo structure, smart authority distribution, and proper anchor text selection, you can significantly improve the rankings of your site's important pages without any extra cost.

Start with one page: the page that matters most to your business. Design the silo structure around it, add internal links purposefully, and diversify the anchor texts. After a few weeks, check the results in Search Console. You'll see the difference.