What is Backlinking?

Summary

Backlinking is the practice of obtaining links from external websites that point to your own website. Also called inbound links, backlinks signal to search engines that your content is valuable, trustworthy, and authoritative. Quality backlinks from reputable sources and websites with high domain authority improve search engine rankings, increase referral traffic, and build your own domain’s authority, making backlinking a foundational element of search engine optimization (SEO) strategies.

Why Backlinking Matters

Search engines use backlinks as a primary ranking signal. Without quality inbound links, even high-quality content may struggle to rank competitively in search results. Backlinks act as third-party endorsement, indicating that your content deserves visibility. This makes link building essential for organic search success.

For demand generation professionals, marketing leaders, and content teams, backlinking addresses critical priorities such as:

• Search visibility: Quality backlinks improve SERP rankings for target pages, increasing organic traffic to your website
• Domain authority: Accumulating links from authoritative sources builds overall site authority, benefiting all pages
• Referral traffic: Backlinks drive direct visitors from the linking sites, expanding audience reach beyond search engines
• Brand credibility: Links from respected industry publications position your organization as a trusted voice in its space
• Content ROI: Strong backlink profiles maximize the return on content investments by amplifying reach
• Competitive advantage: Superior backlinking helps your content outrank competitors for valuable search terms
• Improves authority for AEO: There is strong evidence that LLMs favor content that has quality backlinks when answering users’ queries

Organizations with strong backlink strategies achieve greater organic visibility, generate more inbound traffic, and establish stronger market authority.

How Do Backlinks Work?

Search engines evaluate backlinks as indicators of content quality and relevance.

The link evaluation process

When a website links to your content, search engines interpret this as an endorsement. The value of that endorsement depends on several factors:

Dofollow vs. nofollow backlinks

Note that links are “dofollow” by default; this property does not need to be specified in HTML. Conversely, nofollow links need to be purposefully configured by adding the rel=”nofollow” property to a link’s HTML tag. In any case, both link types contribute to a healthy backlink profile. An unnatural ratio of only dofollow links may even appear manipulative to search engines.

Link equity distribution

Link equity (also called "link juice") flows from the linking page to the linked page. Factors affecting how much equity transfers include:

• Page authority: Higher-authority pages pass more value
• Number of outbound links: Pages with fewer links pass more value per link
• Link position: Links placed higher on the page and within content pass more value
• Relevance: Contextually relevant links pass more value

What Makes a Backlink High Quality?

Not all backlinks provide equal value. The following quality indicators distinguish valuable links from low-impact ones:

Backlink quality criteria

Signs of low-quality or harmful backlinks

Low-quality backlinks can trigger search engine penalties, reducing rather than improving rankings. Some examples include:

• Link farms: Networks of sites created solely to sell or exchange links
• Paid link schemes: Purchasing links specifically for SEO (against search engine guidelines)
• Irrelevant directories: Mass submissions to low-quality web directories
• Comment spam: Links placed in blog comments or forum signatures
• Private blog networks (PBNs): Networks of sites controlled to manufacture backlinks

How Do You Build Quality Backlinks?

Effective link building combines content excellence with strategic outreach.

Link building strategies

Content that earns backlinks

• Original research and data: Surveys, studies, and proprietary data that others cite when making claims
• Comprehensive guides: Definitive resources on topics that become go-to references
• Visual assets: Infographics, charts, and graphics that others embed with attribution
• Tools and calculators: Interactive resources that provide unique value
• Expert roundups and interviews: Content featuring industry voices who share with their audiences

Guest posting best practices

• Target relevant publications: Focus on sites your audience reads with genuine editorial standards
• Provide genuine value: Write content that would succeed on your own site, not thin promotional pieces
• Include natural attribution: Link back contextually within the content or in an author bio
• Build relationships: Develop ongoing contributor relationships rather than one-off placements

Content syndication for backlinks

Content syndication through third-party websites or platforms, also known as content activation, links back to the original source, expanding brand visibility while building backlinks. When syndicating content:

• Ensure publishers include attribution and links to the original source
• Use canonical tags when republishing full content to avoid duplicate content issues
• Place backlinks at the start with "originally appeared on..." for visibility
• Prioritize partners who provide metrics to evaluate performance

How Do You Measure Backlink Performance?

Track metrics that reveal both quantity and quality of your link profile.

Backlink metrics

Key performance indicators

• Referring domain growth: More important than raw link count. One link each from 100 domains outweighs 100 links from one domain
• Domain authority trend: Track whether your overall authority is increasing over time
• Link velocity: The rate at which you acquire new links. Sudden spikes may appear unnatural
• Competitor comparison: Benchmark your link profile against competitors for target keywords

Backlink audit process

• Inventory existing links: Export your complete backlink profile from SEO tools
• Assess link quality: Evaluate each linking domain for authority, relevance, and risk
• Identify toxic links: Flag potentially harmful links from spammy or penalized sites
• Disavow if necessary: Submit disavow files to search engines for links you cannot remove
• Monitor ongoing: Set up alerts for new backlinks and regularly audit your profile

Key Takeaways

• Backlinking is the practice of acquiring links from external websites to improve search rankings, drive referral traffic, and build domain authority
• Backlinks work as endorsements: Search engines evaluate source authority, relevance, placement, anchor text, and link type to determine value
• High-quality backlinks come from authoritative, relevant sites with contextual placement and natural anchor text, while low-quality links can harm rankings
• Build backlinks through valuable content creation, guest posting, original research, broken link building, content syndication, and relationship development
• Measure backlink performance through referring domain count, domain authority trends, link velocity, and regular audits to maintain a healthy profile

Learn More About Backlinking and SEO

Explore strategies for building authority and organic visibility:

• Leveraging SEO to Boost Conversions
• The CMO Guide to Driving Demand with Content Activation