If you are looking for a quality review of the best SEO link building service providers, you have come to the right place.

However, acquiring backlinks just for backlinks is more than inadvisable. Relevance to your (or your client's) industry vertical will be critical as you evaluate the various link building service providers on the market. Additionally, as search engine algorithms continue to become more advanced, they will better include the ability to recognize both the quality and relevance of off-site content that you (or your SEO agency) produce.

Since link building remains one of the biggest factors affecting your ranking in online search, it's important to understand how you can earn backlinks in an ethical, affordable, and scalable way to have the best impact on your business and drive sustainable results for your business over the long term. In an earlier time, it was easy to buy large scale cheap links from outsourcing companies from places like India. Today's focus on quality and relevance means those days are behind us.

And while this has increased the overall cost of getting high-quality backlinks, it also ensures that only the most professional sites appear higher in search rankings than their competitors.

Google's algorithms continue to give credit and credibility to sites that demonstrate high levels of trust and authority. One of the best ways your website can demonstrate such authority is to have a large number of similar sites linking relevantly to your site. This acts as a signal of authority, further increasing your site's overall relevancy in search rankings. Prove your expertise, earn links and your site will rank higher in search.

However, quality link building is not done that easily. Quality and scale are almost diametrically opposed. Keeping both at the same time can be extremely difficult. However, if sourced correctly, links can be one of the best tools for increasing your search presence over time.

As such, supplementing and complementing your own internal link building campaigns with the help of knowledgeable professionals can be extremely beneficial to your long-term SEO success.

Top 10 Link Building Service Providers

As you look to supplement your own efforts in building quality backlinks for your website, the following service providers will be important to consider as you look to build quality backlinks for your online business. It is always recommended that when creating your own campaign with a link building partner, you do your own extensive due diligence, ensuring that the company you hire meets the standards of professionalism you care about.

In making my assessment here, I kept several key considerations in mind.  What are the company's minimums in terms of cost of participation? What types of case studies can the company showcase, and how has the company performed overall in field tests for various industries?

1.SEO.co


In operation since 2008, SEO.co has been providing high-quality link building for over a decade. The company mantra is quality. They cater to high-end clients and agency resellers looking to white-label company SEO services, allowing smaller agencies to scale their link building without breaking the bank on their own. The company employs in-house copywriters who produce content that is then published (with links fully intact) on websites with a high domain authority (DA) (DA 50-90). The company maintains direct relationships with thousands of high-quality site publishers, allowing its clients to get extremely relevant links from very high-quality websites. Depending on the company's site, they guarantee placement or your money back. Also, the company has a good purchasing control panel, which allows users to easily purchase links based on DA and destination URLs. The company also operates a second website designed specifically for link building:

The company is based in Seattle, WA and continues to provide exceptional service to both direct website owners and SEO agency partners and resellers. They come highly recommended for their work.

2.Stellar SEO


As a top-tier link building service provider, Stellar SEO offers a suite of solutions to its clients to acquire relevant and high-quality SEO backlinks. The company's concierge service provides clients with a unique strategic approach to link building that other SEO link building agencies often don't have. Stellar SEO is very disciplined in how it approaches link building, sourcing links for its clients that are niche-specific and industry-relevant. Unfortunately, that sometimes means domain authority isn't that important.

Like the other link building service companies mentioned above, Stellar SEO is based in the United States with English speaking staff and high quality speaking service.

3. FatJoe


Based in the UK, Fat Joe has been in the link building and content marketing business for years. One of the areas that sets Fat Joe apart from the competition is a customer-friendly control panel. Their personalized dashboard allows customers to search and shop among a wide variety of the company's services, including direct link building and even high-end Blogger Outreach. Blogger Outreach is billed by the hour and provides your business with relevant links through direct outreach from the Fat Joe team. Although this service is billed by hours worked, it is one of the best ways to get backlinks from the most relevant sources on the web.

The company also includes blogging and press release writing services for other on- and off-site content marketing needs. With a full team of content writers, their response time is relatively quick and their quality is "good enough" for most websites.

4.LinkFish


By focusing on building links for highly competitive niche websites, Link Fish has made a name for itself by focusing on the human aspects of creating quality content and quality backlinks. As a company, Link Fish focuses on old techniques to get placements for client campaigns. That is, the company takes a hands-on approach to outreach to find the most relevant websites to build quality links. The company does not require ongoing contracts and provides link analysis, SEO audits, and backlink profile cleaning services.

5.vertical measures


A results-driven SEO company, Vertical Measures offers a wide variety of digital marketing services to its clients, just one of which is direct link building through highly relevant content marketing. Instead of focusing solely on one niche in link building, the company takes a more holistic SEO agency approach, creating content that ultimately drives results online. As such, the company spends more time on strategy before implementing an action plan that will deliver the necessary results for client campaigns. Vertical Measures is based in Phoenix, AZ and their team is based in the US and highly regarded for their work in digital marketing, link building, and SEO.

6.Digital Current


Like several other groups mentioned here, Digital Current is a link building company that focuses on quality content, website relevance and Domain Authority. 

 provide sustainable link building services for client campaigns. They also perform direct publisher outreach, engage directly with influencers, create info graphics and build links by creating online scholarship programs.

7.Linkology


Linkology differentiates itself by measuring link domains in various ways. First, they look at existing metrics provided by third-party companies like Moz and Ahrefs, but also take into account the relevancy and traffic metrics of the link publisher's website. This holistic approach to publisher acquisition for clients helps ensure that some of the highest quality links are built. For example, if you were a shoe manufacturer looking to rank for shoe-related terms, Linkology helps you find shoe-specific websites that have high authority and existing website traffic that would be willing to link to your brand and website. . The company also takes a very personalized approach to how they build links for their clients, allowing them to choose from a number of different link building packages. Linkology is based in the UK.

8.HigherVisibility


Like others on this list, Higher Visibility is a link building service provider that focuses on 1) websites with high authority, 2) websites with existing traffic, and 3) websites whose content, topic, and existing audience are relevant to your particular niche. While this approach requires a bit more effort (which can sometimes translate to higher cost), it ultimately leads to better results for clients' SEO link building campaigns. In addition to link building, the company offers a number of other digital marketing solutions, including PPC management and website design. They are not simply creating links for customers. They take a personalized approach to organic and inorganic website success.

9.TheHoth


As one of the biggest players in the link building services market, Thehoth ("Hit Over The Head") is one of the most well-known service providers in the space. They have thousands of customers with mixed reviews on online forums. Given the nature of what they do and the scale they have reached, there is a high probability of receiving such feedback. I have personally used their service in the past, but the particular service offering worth mentioning when it comes to link building is Hoth Blitz. The company's Blitz product uses the company's internal sales and marketing team to work via email and phone to get their intended links published on very high domain authority (DA) websites. Give them your target destination URLs, desired DA, and given keywords and the company's army of outbound marketers will go to work getting you the links you want. TheHoth is located in sunny Florida.

10.PageOnePower


Operating in Idaho for over a decade, Page One Power is one of the best known companies in the world of link building. With commitment minimums of around $3500 per month, Page One Power is not an SEO agency for local mom and pop businesses. The firm takes a highly relevant approach to link acquisition, acquiring links based on specific goals and objectives of the client. They take great care to put together specific strategies that match what their clients are looking to achieve in both the short and long term.

The company doesn't just use Domain Authority or Page rank as a specific metric for high-quality links. Instead, they analyze numerous factors on and off the site, actively choosing to find links that best match a site's current backlink profile and eventual goals. Before, during, and after running a link campaign, the company helps communicate why a particular link, website, or destination URL was the strategy, allowing your experience to filter down to the landing pages in question. . However, with company minimums there are no guarantees and purchased links may sometimes not move the needle fast enough, especially if the budget does not meet the company's mid-size commitment dollar threshold

Choose your link building service wisely

While the above list of link building service providers is not intended to be exhaustive, it does include some of the best known and most referred companies in the industry. In most cases, your link building campaigns will work well with links purchased from any number of companies in the list above. However, you should certainly do your own due diligence, asking your potential SEO agency the right questions, ensuring that the links you acquire through your efforts are useful and do not harm the overall goals of your website.