As a product owner and then an entrepreneur, one of the first things I learned when launching a new product or service is the importance of understanding your market size. Over the years at Ytechnology, we’ve worked with businesses of all sizes and found that evaluating the market potential is crucial to making informed decisions. This is where TAM, SAM, and SOM come in.
These three concepts—total Addressable Market, Serviceable Addressable Market, and Serviceable Obtainable Market—are key tools that can help you navigate and scale your business effectively. Let’s break them down and share some real experiences we’ve had along the way.
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What is TAM (Total Addressable Market)?
TAM, or Total Addressable Market, represents the total demand for your product or service in a particular market. It’s the largest possible market opportunity and assumes your product captures 100% of the demand. For example, when expanding our Web Insights product offering, we initially looked at the TAM for the entire web analytics and SEO market. It was huge—hundreds of billions of dollars globally- exciting and a bit overwhelming!
While the size of the opportunity was exciting, we quickly realized that TAM is more of a dream than something we could act on. Knowing our TAM helped set a big-picture vision but didn’t guide us on where to focus next.
Why TAM matters:
TAM gives you an overall idea of what’s possible. But it’s also a reality check—it helps you think big but not lose sight of what’s achievable in the short term.
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What is SAM (Serviceable Addressable Market)?
Here’s where things start to narrow down. SAM, or Serviceable Addressable Market, is the segment of your TAM that you can realistically target with your product or service. For us, this became much clearer when we focused on local businesses and small—to medium-sized enterprises (SMBs) that needed data-driven digital solutions.
Initially, we were excited about serving a global market. Still, we realized that SAM was more achievable when we started talking to small business owners and leaders in specific industries—like retail, health services, and professional services. We could cater to them with our Web Insights Kit and Growth-Driven Design methodologies in a way that would add real value.
For instance, a customer in the healthcare industry was one of the first businesses we helped with insights into website traffic and lead generation. They were initially part of our broader target market (TAM), but after understanding their specific needs, we realized they fit perfectly into our SAM.
Why SAM matters:
SAM helps you define who your actual customers are within the larger market. It focuses your energy on the segment most likely to convert and where your business can have the biggest impact.
What is SOM (Serviceable Obtainable Market)?
Here’s where the rubber meets the road: SOM, or Serviceable Obtainable Market, represents the realistic share of your SAM that you can capture in the short term. This is where we had to buckle down and take stock of our resources. When we launched Connect2Me, a chat tool for service-based businesses, our initial focus was on small businesses that needed a simple, affordable customer support solution.
However, even within our SAM, there was a big difference between the businesses ready to adopt a solution like ours and those not. We had limited resources and a small team, so we had to decide where to focus. We targeted service-based businesses with fewer than 50 employees, making the SOM much more manageable. It also aligned with our team’s capacity for onboarding and supporting clients effectively.
For example, a local gym was one of our first Connect2Me customers. They needed a simple way to handle customer inquiries and appointments online. With a small, dedicated team, we captured their attention and provided immediate value—this was our SOM in action.
Why SOM matters:
SOM is where you need to be realistic about what you can actually achieve. It helps you set clear, measurable goals. It allows you to prioritize what’s immediately actionable based on your resources and market dynamics.
How TAM, SAM, and SOM Work Together
When we started using TAM, SAM, and SOM together, it was like piecing together a roadmap for our business. Each one helped us understand a different part of the journey.
- TAM gave us the big picture—the opportunity in front of us.
- SAM helped us focus on the businesses and industries we could best serve.
- SOM then told us where we could make a real impact right now.
For example, with our WebSeeds offering for startups, we originally aimed for a broad market—TAM was massive. But after refining our SAM and understanding the needs of early-stage startups, we honed in on specific industries like tech startups and service-based businesses. Once we had our SOM—targeting small businesses with limited budgets but a strong need for a scalable website solution—we could design marketing campaigns that directly addressed their pain points, driving both leads and revenue.
Why It Matters for Business Owners and Leaders
So, why does this matter to business owners and leaders like you? Understanding TAM, SAM, and SOM allows you to:
- Assess Market Potential: Instead of blindly chasing a large market, these tools help you understand whether it’s big enough to invest in and worth the effort.
- Focus Resources: Knowing where to focus your time and money is critical with limited resources. SAM helps you prioritize your efforts.
- Set Achievable Goals: By evaluating your SOM, you can set realistic, measurable goals. It’s all about working with what you have, not just dreaming big.
These metrics give you the clarity to make better decisions, invest wisely, and scale effectively. They have been game-changers for us as we refine our strategies and help clients grow.
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Practical Steps for Implementing TAM, SAM, and SOM
Here’s how we approach these metrics at Ytechnology and recommend to our clients:
- Step 1: Start with TAM – Evaluate the opportunity and dream big, but keep it realistic.
- Step 2: Define your SAM – Narrow your market focus by looking at who you can serve with your resources.
- Step 3: Determine your SOM – Set short-term, achievable goals based on your current capabilities and market conditions.
Pro Tip: Reassess these metrics regularly. Your SAM and SOM will evolve as you scale, and you may find new opportunities to tap into.
Conclusion
Understanding TAM, SAM, and SOM creates a more precise roadmap for your business. These concepts help you make smarter decisions, allocate resources efficiently, and ultimately grow your business sustainably.
How have TAM, SAM, and SOM impacted your strategy? We’d love to hear your experiences in the comments below!
DKeith Wilson is the founder of Ytechnology, where he helps businesses replace fragmented marketing, sales, and operational efforts with structured systems that make growth more predictable.
His work focuses on how systems, data, and decision-making come together to drive business performance. Through his writing, he explores why companies stall before they scale—and what it takes to build repeatable growth.
You can find more of his work on Ytechnology, LinkedIn, Substack, and dkeithwilson.com.
