The Bullseye Framework: what is it and how do you choose the right marketing channels?

In short: The Bullseye Framework is a three-step method from the book Traction by Gabriel Weinberg and Justin Mares to find your best marketing channel. Brainstorm all 19 traction channels (outer ring), test the two or three most promising cheaply (middle ring), then put most of your time and budget into the one or two that work (inner ring).

What is the Bullseye Framework?

The Bullseye Framework is a method for systematically selecting your marketing channels. It helps startups decide which of the nineteen marketing channels they should test and which ones they should scale up. The underlying observation behind the framework is that most startups don’t fail at building a product: they fail because they don’t get it in front of enough customers.

The core metaphor is a dartboard. You start at the outer ring (all possible channels), move on to the middle ring (a few promising channels you test), and end up at the bullseye (the channel that works and where you go all in).

Most startups focus on the wrong channels too early or test too little. Bullseye forces you to think broadly first, then test with discipline, and only scale up once you have data.

Core principle from the book: spend 50% of your time on product and 50% on traction. This balance prevents the “build it and they will come” trap that many founders fall into.

In 2026, AI lets you test those channels faster, and new channels have appeared, such as GEO, TikTok Shop and AI discovery platforms. That makes Bullseye’s systematic approach more useful, not less.

At Sprints & Sneakers, a growth marketing agency in Amsterdam, we use the framework to choose channels for B2B and B2C growth marketing programs. It fits naturally with growth hacking: both are about testing fast and doubling down on what works.

The 19 customer acquisition channels

To make good choices, you first need to know what’s possible. Traction lists nineteen ways to acquire customers. Most companies use only a few of them.

1. Viral marketing. Your product allows existing users to invite new users (such as Dropbox’s referral model)
2. Public relations (PR). Traditional media coverage via press releases and journalistic pitches
3. Unconventional PR. Public stunts and creative campaigns that attract media attention
4. Search engine marketing (SEM). Paid ads on Google and Bing
5. Social & display ads. Paid media on Facebook, LinkedIn, Instagram, and programmatic display
6. Offline ads. Radio, print, TV, billboards
7. Search engine optimization (SEO). Organic search rankings
8. Content marketing. Blogs, white papers, podcasts, video
9. Email marketing. Newsletters, nurture sequences, cold email
10. Engineering as marketing. Tools, calculators, and free resources that serve as marketing
11. Targeting blogs. Guest blogging and appearing on relevant blogs and podcasts
12. Business development. Partnerships, integrations, and strategic alliances
13. Sales. Direct sales, outbound prospecting
14. Affiliate programs. Commission-based referrals
15. Existing platforms. Growing on existing platforms (App Store, Chrome Extension Store, etc.)
16. Trade shows. Industry-focused events and trade fairs
17. Offline events. Meetups, workshops, dinners
18. Speaking engagements. Keynotes, panel discussions, conferences
19. Community building. User communities, forums, ambassador programs

Some teams now add Generative Engine Optimization (GEO) as a 20th channel. This involves optimizing to be cited in AI answer engines such as ChatGPT, Perplexity, and Claude. Many B2B buyers now ask AI tools for recommendations before they visit a website, so this channel is worth a line in your brainstorm.

The 3 rings: outer, middle, inner

The Bullseye process filters your nineteen channels through three rings. Each ring has its own purpose.

Ring 1: Outer (what’s possible?)

Here, you think broadly. For each of the 19 channels, come up with at least one realistic way it could work for your product. Brainstorm, don’t analyze. The goal is to broaden your horizons. Many founders skip this step and, as a result, miss the less obvious channels that are the best fit for their product.

Ring 2: Middle (what is likely?)

From the Outer ring, choose the 2 or 3 channels you’ll test. Pay attention to three things: Which are most likely to work for your product? Which can you test quickly and cheaply? Which fit your stage and budget? Conduct small experiments (for example a budget under €1,000 and a duration under 4 weeks) to validate whether the channel can cost-effectively attract new customers.

Ring 3: Inner (what works?)

From the tested channels, pick the 1 or 2 that clearly outperform the rest. These are your core traction channels. Spend most of your time and budget here to scale up. The focus here is on execution. You’re going deep, not wide anymore.

The most important insight is that many startups get stuck in the Middle ring. They test endlessly and never scale up. Bullseye forces you to make a choice: which channel works best, and how are you going to use it to the fullest?

The 8 steps to applying Bullseye

Step 1: Brainstorm for each of the nineteen channels

For each of the nineteen traction channels, write down at least one hypothesis about how the channel might work for your product. Think broadly. You can discard the “bad” ideas later, but you can’t come up with them if you don’t put them on paper.

Step 2: Rank the nineteen channels

Now rank all 19 channels. Which ones are the most promising for your product? Use criteria such as: potential reach, alignment with your target audience, competition, costs, and timeline to first results. Assign each a score from 1 to 5 on each dimension.

Step 3: Select two or three for the Middle Ring

Pick the two or three highest-scoring channels. These are the ones you’ll test. More than three at a time is too many: you’ll spread your attention too thin and won’t get enough depth per channel.

Step 4: Design small experiments

For each of the selected channels, create a small, low-cost experiment. The goal is not to scale. The goal is to learn. For example: a budget under €1,000 per channel, a timeline of 2 to 4 weeks and clear success criteria (“We’ll validate this channel if we can generate at least 10 leads for a CPL under €50”). Need inspiration? See these marketing experiment examples.

Step 5: Run the experiments

Run the experiments side by side. Write everything down: what actions did you take, what results did you get, what was the CPA, what was the quality of the leads?

Step 6: Analyze the data

After four weeks, you’ll have data. Which channel performed best? Not just in terms of volume, but also in terms of cost. Good A/B testing habits help you tell a real result from noise.

Step 7: Focus on the Inner Ring

Choose one or two channels. This will be your primary marketing focus. Dedicate most of your time and budget to this. Stop your other experiments. You need to stay focused.

Step 8: Repeat the process

Bullseye isn’t a one-time thing. Repeat the process every six to twelve months. Channels get exhausted, markets shift, and new channels emerge. What was your Inner Ring last year might be saturated this year. What’s new in the market (for example, GEO in 2026) might be your new bullseye.

Companies that found their bullseye channel

The book Traction is full of companies that grew by going deep on one channel. Some used the Bullseye process directly; others are well-known examples of the single-channel focus it teaches.

Mint, the personal finance app that Intuit acquired in 2009 for $170 million, is one of the examples in Traction. Mint set an initial traction goal of 100,000 users in the first six months after launch. Targeting blogs brought in its first 40,000 users, after which the team shifted its focus to public relations.

Buffer, the social media management platform, grew in its early years through guest blogging and content marketing. By publishing useful articles on other blogs and its own, Buffer reached a large audience of social media managers.

HubSpot built its growth on inbound marketing: search and a large library of educational content. Co-founder Dharmesh Shah is one of the founders interviewed in the 2015 edition of Traction.

Dropbox focused on viral marketing. Users were encouraged to invite friends in exchange for extra storage. That referral program became one of the best-known examples in the growth playbook.

Bullseye in 2026: what has changed

The original Traction book was published in 2014. In 2026, the core principles remain the same, but the implementation has changed.

AI speeds up experiments

AI-driven testing in paid media, content generation, and analysis shortens feedback loops, so a channel test can often run in less time than it used to. You can test more channels simultaneously with the same resources.

New channels

Generative Engine Optimization (GEO), TikTok, Substack, Threads, community-driven platforms, and AI discovery tools have emerged. Bullseye must incorporate these new channels. Some are a subcategory of an existing channel, while others are entirely new.

Greater saturation

Paid search was a lot cheaper in 2014 than it is today, and many B2B keywords have become expensive. Channels that worked 10 years ago are now crowded. Outbound signal-based selling, thought leadership, and community-driven growth are still underused by many teams.

Attribution is more complex

In 2014, most startups could simply use last-click attribution. In 2026, with cookie opt-outs, multi-touch journeys, and longer sales cycles, attribution has become much more complicated. Your Inner Ring choice requires more precise measurement, for example with cross-channel marketing attribution.

Agentic workflows let you work faster

Once you’ve found your Inner Ring channel, you can deploy agentic AI workflows to scale up. Automated outbound, dynamic content personalization, AI-driven bidding in paid media. That accelerates the return on the channel you’ve chosen.

From a framework to more traction

The Bullseye Framework remains one of the most practical tools in growth marketing. Its strength lies in its simplicity: brainstorm, test, focus. In 2026, AI-driven analytics, agentic workflows, and new channels like GEO let you test faster and learn sooner than before.

Those who succeed in growth have the most disciplined process for identifying and scaling the right channels at the right time. A large budget helps, but it doesn’t determine who wins. The Bullseye Framework gives you that process.

At Sprints & Sneakers, we use the Bullseye Framework as part of every Growth Audit & Strategy. We help brands identify their marketing channels with the most potential, set up AI-driven experiments to validate them, and build the infrastructure to scale what works, across all relevant channels.