Link building for SaaS and B2B software

By Bill Hartzer · Hartzer Consulting · 25+ years in search, domains and expert witness work

Why software is a favorable case, and why teams waste it

SaaS and B2B software companies are in an unusually strong position for earning links, and most of them squander it. They have a product that does something demonstrable, usage data nobody else holds, engineers who can build a small tool in a week, and a surrounding ecosystem of partners, integrations and competitors all publishing about the same subject.

What most of them do instead is publish blog posts about the category, on the theory that useful content earns links. It rarely does, and the reason applies to every tactic on this page: a link is a citation, and people cite things they need to refer to. Nobody needs to refer to your explanation of what customer relationship management software is. There are two thousand of those.

The assets that earn links in this sector are the ones where you are the only possible source: your integration list, your API, your uptime record, your aggregate usage data, your changelog. Being the only source is the entire mechanism behind an earned link. There is a second advantage: software buyers research in public, so comparison posts, migration guides and community threads are published constantly by people who are not you, and every one is a potential citation.

Integration and partner pages

This is the most reliable link source available to a software company and the one most consistently under-worked.

Every integration you support is a relationship with another company that has a marketing team, a partner directory, a documentation site and an incentive to look well-connected. The mechanism is symmetrical and uncontroversial: they list you because your integration makes their product more useful, and you list them for the same reason. No money changes hands, no favor is being asked, and the link sits on a page that a real buyer will read.

Doing it properly means treating each integration as a small project rather than a row in a table:

• Build a real page for each integration, not a logo grid. Explain what it does, how to set it up, and what breaks. A page with substance can be cited by third parties too.
• Get listed in their marketplace or directory. Most accept submissions and most companies never bother. These listings are frequently the first result for "X integration with Y".
• Ask for the reciprocal page and offer to write the first draft. Partner marketers are busy and usually accept a good draft gratefully.
• Co-publish something. A joint guide, a webinar, a shared customer story. Both companies promote it, and both link to it.

Two honest cautions. Marketplace listings are often nofollow, which is fine — they carry buyers, and a nofollow link on a page real people read beats a followed link nobody sees. And do not let this become a link exchange. Reciprocal links between companies with a genuine product relationship are normal business; reciprocal links arranged purely for SEO between unrelated software companies are a pattern, and patterns get recognized.

Comparison and alternatives content

Comparison pages — yours versus a competitor, or "alternatives to X" — are usually discussed as conversion assets. They also earn links, but only in a specific form, and the form matters.

What does not earn links is the marketing version: a table where every row has a checkmark in your column and a cross in theirs. Nobody cites that, because nobody believes it. Reviewers, analysts and forum participants link to comparisons that are visibly fair, and fairness is detectable in seconds.

What does earn links is a comparison that states plainly where the competitor is better. If your product is weaker on enterprise reporting and you say so, the page becomes citable, buyers trust the rest of it, and the sales conversations that follow are with people who are a genuine fit.

Practical notes on this format:

• Keep it current, and date it. A comparison with a visible last-updated date is the version a writer will cite, because the alternative risks being wrong.
• Compare on the dimensions buyers actually weigh — implementation time, data migration, support model, contract structure — not on feature counts.
• Be careful with competitor claims. Inaccuracies about a named competitor invite legal correspondence, and correcting a published claim under pressure is worse than never making it.
• Write the alternatives page for the category, not just for yourself. A useful "alternatives to X" page listing six products, including some you lose to, is a resource. One listing you and five straw men is an advertisement.

Product-led linkable assets

The strongest link asset a software company can build is usually a small, free, single-purpose tool derived from something the product already does.

Your product solves a problem for paying customers behind a login. Some narrow slice of that problem is also faced by people who will never buy, and who currently solve it with a spreadsheet. Extracting that slice into a free tool with no signup creates something that gets bookmarked, shared in communities, and cited for years.

The criteria that separate the tools that earn links from the ones that do not:

• No signup wall. A gated tool cannot be linked to usefully, so it will not be linked to.
• One job, done completely. Broad tools are forgettable. A tool that does exactly one annoying thing perfectly is memorable.
• A stable URL, maintained indefinitely. Link durability depends on the page continuing to exist and continuing to be worth linking to. Roughly half of all links are eventually lost, and abandoned tools lose them fastest.
• Genuinely free, permanently. Converting a linked free tool into a paid one destroys the asset and irritates everybody who cited it.

The other product-led asset is aggregate data. You have usage patterns and outcomes across your customer base that nobody else can produce, and a benchmark report built from anonymized data and published annually becomes the number your industry cites. Two conditions are non-negotiable: get the privacy and contractual position right before publishing anything derived from customer data, and state methodology and sample size honestly. A benchmark whose sample is not described is one a serious writer will not cite.

Developer documentation, APIs and changelogs

This is the most overlooked link surface in the entire sector, largely because documentation is owned by engineering and link building is owned by marketing, and the two rarely discuss it.

Developer documentation earns links passively and durably. When somebody writes a tutorial, answers a forum question, publishes a library that wraps your API, or explains an integration on their engineering blog, they link to your docs — to the specific endpoint reference, not to your homepage. These links come from technical sites with genuine standing, and they last, because documentation URLs are maintained for years.

Things that increase this flow measurably:

• Stable, deep-linkable URLs. If every documentation restructure breaks existing links, you are destroying the asset on a schedule. When you must restructure, redirect properly.
• A public API reference that does not require a login. Gated docs cannot be cited.
• A public changelog with a permalink per entry. Each entry is a small, permanently citable fact.
• Open source anything you reasonably can. SDKs, examples, helper libraries. Repositories attract links from other repositories, package registries, and every tutorial that uses them.
• A status page and an incident history, cited by procurement writers and by engineers comparing vendors.

Postmortems deserve a mention of their own. A candid engineering postmortem after an outage is one of the most linked artifacts in software, because the industry treats them as teaching material. Publishing one requires unusual organizational confidence, which is exactly why they are scarce and valuable.

Why "we wrote a blog post" rarely earns anything

I want to be blunt about this because it is where most SaaS link budgets go.

The standard content program produces posts targeting search terms in the category. Those posts may rank, may convert, and may be worth publishing. What they almost never do is earn links, and the reason is structural rather than a matter of quality.

A link happens when a writer needs to point at something, and they point at sources — data, tools, primary documents, original arguments. A well-written explainer on a subject fifty other companies have explained is not a source. It is one instance of a commodity, and the writer will link to the instance they already know.

Content that does earn links has one of a small number of properties: it contains a number that did not exist before, it takes a position the industry argues about, it documents something that happened to a real company in detail, or it is the reference implementation of a process.

The fix is not to stop publishing. It is to separate the two jobs explicitly. Search content targets demand and is measured on rankings and conversions. Link content targets citation and is measured on referring domains. Judging a search post by its links, or a data study by its immediate conversions, produces the wrong conclusion about both.

How this fits a program, and what to measure

A workable annual shape for a software company with modest resources: work the integration and partner surface continuously, publish one substantial data or benchmark piece, ship one free tool, and keep the documentation and changelog in a state that invites citation. That is four workstreams, only one of which requires outreach at volume.

Measure it in referring domains rather than links, and segment by source. Documentation links accumulate slowly and last; campaign links arrive in bursts and decay. Averaging them into one number hides both behaviors.

Watch decay explicitly. In my own profile, 49.6% of every link ever recorded has been lost, and 97.4% of those losses happened while the source page was still perfectly reachable. For software companies the most common cause is self-inflicted: a documentation migration, a changed tool URL, a rebranded product page. Before any migration, export the pages that receive external links and make sure every one of them redirects to a specific equivalent.