B2B buying is a multi-stage process, often taking months to complete. Usually, a team of people spend time researching and analyzing a product or solution to see if it even makes their shortlist. It’s more than a vendor capability assessment; it’s a deeply complex journey rooted in addressing critical challenges and needs.
A 2026 report from Forrester uncovered that generative AI (gen AI) searches are an increasingly popular starting point for research and discovery. Buyers are relying more on their internal and external networks to validate purchase and procurement decisions. How marketing and sales teams reach their buyer audiences has fundamentally changed because of AI search. What vendor assessment really boils down to now is credibility and value.
What is the Vendor Assessment Process?
The vendor assessment process represents how an organization evaluates suppliers, either existing or prospective, to make sure they meet necessary requirements for quality, reliability, compliance, and risk. These assessments typically involve the review of a vendor’s financial stability, security practices, performance history, and alignment with business needs and objectives.
The reason buyers conduct vendor assessments is to select a provider that can effectively minimize risk while also supporting strategic and operational initiatives. This phase is where B2B organizations need to show their credibility and how they will bring value to the customer or prospect.
5 Credibility Factors B2B Buyers Check During Vendor Assessment
Vendor engagement is still a critically important phase of the buying process. The rise of large language models (LLMs), however, changed what buyers come to the table with when they are ready to reach out.
Data from a 2025 report shows that 94 percent of buyers say they use LLMs for research, such as analyzing sentiment from customer reviews. In this same report, 94 percent also said “yes” when asked if they were able to develop their shortlist in order of preference before reaching out to a seller directly.
Gen AI platforms are making it easier than ever for B2B buyers to independently research and develop their own notions about a vendor and its solutions before the first conversation occurs. A convenience for buyers, but the risk of AI hallucinations and the very nature of how LLMs are trained to provide outputs creates the risk of being viewed incorrectly and negatively. The pressure is on vendors to make sure how they show up digitally comes across as trustworthy. The following are five factors that can make or break trust and credibility.
1. Brand reputation
A large part of a B2B brand’s credibility hinges on how reputable they are in the market. Buyers look for validation from third parties such as user reviews and testimonials, peer recommendations, case studies, and industry awards and accolades. In a 2026 survey, 91 percent of participants indicated that people trust online reviews more than they trust marketing information.
External validation helps reduce any perceived risks and signals consistency. B2B buyers want to work with a brand that can deliver value across multiple projects, customers, and use cases. Collective proof builds that trust at scale.
2. Technical competence
In any B2B purchase, buyers are going to evaluate whether the solution they are considering has a proven track record. Support quality and knowledge from the vendor is also part of this assessment.
And technical competence goes beyond reliability of the vendor to look at actual proof points for the product. For example, does it improve uptime and if so, by how much? Is there tangible proof that the solution’s data security and compliance features helped users prevent a breach or pass an audit? Buyers want confirmation that the solution works and that the vendor partner truly knows what they are doing.
3. Industry expertise
A vendor’s ability to show deep knowledge and understanding of a buyer’s industry goes a long way in establishing trust and credibility. Data from Forrester shows competency ranks first in supplier traits that build trust. And competency is something B2B buyers aren’t just looking to see from the sales team.
Data shows that nearly half of a company’s market value comes from the reputation of its CEO. A key piece to establishing this credibility is sharing knowledgeable insights and POVs that establish leaders at industry experts. Buyers find more value in B2B brands with visible executives sharing accurate and credible information that pertains to what they need.
4. Customer experience and support
Another critical part of the vendor assessment process is the actual quality of the buying experience. Prospects will look at how easily and readily available information is, if there’s transparency in communication with sales teams, and what’s offered in post-sale services.
Even a brand’s website and how easy it is to navigate factors in, with 97 percent of buyers checking websites first. Since so many B2B buyers can conduct most of their research before reaching out to a brand, vendor websites essentially serve as the first sales meeting.
5. Strategic fit
B2B buyers are always going to evaluate how well a solution aligns with existing systems and workflows. Seamless integration with customer relationship management (CRM) platforms and enterprise resource planning (ERP) systems are a must.
Additionally, when considering long-term business goals, buyers will prioritize solutions that are customizable and can be tailored to fit specific needs. Equally important is the ability to demonstrate clear and measurable return on investment (ROI), as this shows how the money spent on a solution will drive business outcomes.
What Happens When There Are Gaps in Credibility?
Gaps across any of the credibility factors listed above won’t necessarily kill a sale outright. But it will slow momentum and introduce doubt until the deal (likely) fizzles. A weak reputation or limited third-party validation can discourage a buyer from championing a supplier internally. As a result, that vendor may not make it to the conversation about shortlisting.
If technical competence can’t be clearly proven, that vendor won’t move past the evaluation stage, and a lack of visible industry expertise would further erode confidence. The goal is to get a buyer to see the vendor as a true partner, but poor experience creates friction and reservations about the post-sale relationship. Unclear strategic fit also plays a role here as any questions regarding integration or ROI can cause buyers to struggle with justifying the investment.
Even one of these roadblocks can put a deal on pause. Together, they compound, turning interest into hesitation, often before an initial conversation has happened. The ultimate loss here is that a vendor may lose trust and credibility with a prospect because their digital footprint is lacking — and the vendor will never even realize.
Getting Out Ahead in the B2B Decision Making Process
Addressing credibility before it can ever be questioned plays a foundational role in building trust with B2B buyers. Successful brands don’t wait for buyers to come searching for proof; they make sure to proactively embed it at every touchpoint and throughout the full buyer journey. This is increasingly critical as AI search and LLMs now serve as a first meeting point, meaning sales teams may not get a chance to address credibility gaps later.
A more intentional approach to brand marketing and visibility is the necessary and logical next step. Influencing the B2B decision making process during the vendor assessment phase requires a cohesive brand narrative that effectively answers questions, rather than creates more of them.
Done well, vendor credibility is a growth lever that removes friction from the buying process. Buyers can move faster because their questions are already answered proactively through a brand’s market presence and available content. Anticipating and addressing what buyers need to see before they ask makes it easier for them to validate credibility and move forward with a purchase.
