GAP Selling: problem-centric methodology by Keenan

What GAP Selling is

GAP Selling (Keenan, A Sales Guy Publishing 2018) is a problem-centric B2B sales methodology that emphasises rigorous discovery of the gap between the buyer's current state and desired future state. The methodology pushes hard against feature-led pitching: the seller must understand the buyer's situation more thoroughly than competing methodologies typically demand. The book has been adopted by a meaningful share of UK B2B SaaS sales teams since 2020, particularly at growth-stage companies hiring practitioner-track AEs.

The methodology's core premise: most B2B sales lose because the seller does not understand the buyer's problem deeply enough to position the solution credibly. The seller pitches features against an inadequately-understood problem, the buyer perceives the seller as not understanding their situation, and the buyer either disengages or chooses a competitor who demonstrated more substantive understanding.

Core concepts

Current state: a substantive, multi-dimensional understanding of the buyer's situation today. Includes business outcomes (revenue, cost, growth rate), processes (how things actually run), tooling, organisational structure, problems and challenges, and the impact those problems have on the business.

Future state: the buyer's articulated desired future. What outcomes they want, by when, and what they will look like in the buyer's own systems and reports.

Gap: the difference between current and future state. The Gap is the buyer's actual problem to solve. Quantifying the Gap (in revenue, cost, or risk terms) produces the business case for the change.

Impact: the consequences of not closing the Gap. Implication-style amplification of why the Gap matters.

Root cause: the underlying reasons the buyer is stuck in the current state. The methodology pushes the seller to understand root cause well enough that the proposed solution credibly addresses it, rather than treating symptoms.

How GAP Selling structures discovery

The methodology produces a distinctive discovery posture. Sellers running GAP Selling often spend 60-90 minutes on initial discovery calls (longer than typical), ask many questions across multiple dimensions, and produce documented Current State and Gap analyses that are sometimes shared back to the buyer for validation.

The discovery rigour is the methodology's strength and its operational challenge. Done well, GAP Selling produces qualifications and value framings that other methodologies typically do not match. Done poorly, the discovery process frustrates buyers who want to move faster.

Where GAP Selling fits

The methodology fits where:

• Buyers are willing to engage in substantive discovery (sophisticated enterprise and growth-stage buyers typically are)
• Sellers can credibly engage on substance (industry expertise, business understanding, not just product knowledge)
• Deals are large enough that the discovery investment is justified by the resulting commercial outcome
• Differentiation needs to come from how well the seller understands the problem, not from product features alone

UK B2B SaaS, complex services sales, financial services and adjacent regulated sectors fit well.

Where GAP Selling strains

Three failure patterns:

First, discovery overreach. Sellers extend discovery beyond what the buyer is willing to engage with. The buyer pushes back, asks for the demo, and disengages from the discovery conversation. GAP Selling without judgement on pacing produces buyer fatigue.

Second, requires substantive sellers. The methodology depends on the seller being capable of substantive industry conversation. Sellers without that capability cannot run GAP Selling well; they ask the questions but cannot interpret the answers or push for substantive depth.

Third, segment misfit. Like other complex-sales methodologies, GAP Selling does not fit transactional or relationship-led segments. Applied to SMB inbound sales, the discovery investment is disproportionate to the deal size.

Comparison to adjacent methodologies

GAP Selling overlaps with other methodologies in specific ways:

Against SPIN: GAP Selling extends SPIN's question-pattern approach with explicit Current State / Future State framing and Root Cause analysis. The two are complementary; many sellers run SPIN questioning structure within GAP Selling's discovery framework.

Against Challenger: GAP Selling is more buyer-led in discovery; Challenger is more seller-led in insight delivery. The two can combine: substantive Current State understanding (GAP Selling) supports credible insight delivery (Challenger).

Against MEDDPICC: GAP Selling is a discovery and selling methodology; MEDDPICC is a qualification and forecasting framework. They sit at different layers and combine naturally.

GAP Selling in 2026

The methodology has retained traction in UK B2B since 2020. Its emphasis on discovery rigour fits the increasingly sophisticated UK enterprise buyer market. The book is widely circulated; the methodology has entered general practitioner discourse in ways that make GAP-Selling vocabulary common even in teams that have not formally adopted it.

For UK B2B sales leaders considering GAP Selling: the question is whether your team is structurally able to run rigorous discovery. If you have practitioner-track AEs with substantive industry capability and a buyer base that engages on substance, GAP Selling fits well. If your team is heavily junior or your buyers are price-led, alternative methodologies may fit better.