The SaaS Founder’s Guide to Identifying High-Growth Business Verticals

Photo by Austin Distel on Unsplash

Choosing the wrong vertical can break your SaaS business before it even starts. When you have your brand name normalization rules set up against your data and your segmentation well-sorted, you can really establish where the actual opportunity lies.

Why Services Dominate Modern Economies

The world economy has turned decisively toward services. Broadened Statistics: In 2024, services represented 56.7% of China’s GDP, according to data from the World Bank (worldwide), and over 40% two decades earlier. In 2024, services comprised 66.0% of the GDP in the European Union and 77.6% in the United States (in terms of 2021 figures).

This structural change opens massive opportunities for SaaS founders. The tertiary sector, service providers (rather than goods), now employs most workers within developed economies. According to 2023 Eurostat data, the service sector in the EU consisted of:

• 63% of all enterprises
• 49% of total value added
• 52% of employment

What this means for you: Target service-based industries first. They’re digitizing rapidly and need software solutions.

The SME Sweet Spot

Small and medium enterprises represent the backbone of modern economies, and a goldmine for vertical SaaS.

Enterprise Size	Employees	EU Share (2023)	Annual Turnover
Micro	<10	92.0%	≤€2 million
Small	10-49	6.7%	≤€10 million
Medium	50-249	1.1%	≤€50 million
Source: Eurostat 2023; EC SME Definition

SMEs make up 99.8% of all EU enterprises and employ 66.7% of the workforce. In the EU alone, over 20.9 million SMEs generated 58.6% of total value added in 2008.

Key insight: Micro-enterprises dominate numerically, but small and medium-sized businesses offer greater monetization potential, with higher budgets and more complex needs.

Public vs. Private Sector Opportunities

When building your core app dashboard and planning a go-to-market strategy, sector choice matters.

Private Sector Advantages:

• Faster decision-making cycles
• Higher willingness to adopt new technology
• More flexible procurement processes
• Direct ROI-focused conversations

Public Sector Considerations:

• Longer sales cycles (6-18 months typical)
• Stricter compliance requirements
• Higher contract values once secured
• More stable, recurring revenue
• Detailed procurement standards

The private sector refers to all businesses owned by an individual or corporation, according to the classification of business activity, while the public sector refers to those run by the government and government-owned enterprises that provide essential services. Both are good opportunities, so go with the one that best matches your sales throughput and readiness for compliance.

Economic Sector Comparison: Where to Focus

Region	Services (% GDP)	Primary	Secondary
EU-27	66.0% (2024)	~2%	~25%
China	56.7% (2024)	~7%	~36%
USA	77.6% (2021)	~1%	~18%
Source: World Bank 2024

The quaternary sector, information technology and knowledge-based services, is expanding fastest within tertiary industries. This includes:

• IT consulting and services
• Data analysis and business intelligence
• Research and development
• Educational technology
• Healthcare information systems

Actionable tip: Look for industries transitioning from manual to digital processes. These sectors offer greenfield opportunities for vertical SaaS.

Practical Steps to Identify Your Vertical

1. Apply Data Normalization

Clean company data using consistent brand name normalization rules. Standardize industry classifications (NACE codes in the EU, NAICS in the US) to accurately segment your addressable market.

2. Size Your TAM Precisely

• Filter by geography (local, national, global)
• Segment by company size (micro, small, medium)
• Categorize by industry (primary, secondary, tertiary, quaternary)
• Assess public vs. private sector opportunities

3. Validate Market Maturity

Target sectors with:

• 5-20 employees (small business) for easier penetration
• €500k-€10 million turnover (proven businesses with budget)
• Service-based operations (higher software adoption)
• Limited existing software solutions (less competition)

4. Test With a Focused ICP

Build your ideal customer profile around:

• Specific industry vertical
• Company size range
• Geographic focus
• Public or private sector

Final Recommendations

High-growth verticals share common characteristics:

• Operating in expanding tertiary/quaternary sectors
• Dominated by SMEs (not micro-enterprises)
• Experiencing digital transformation pressure
• Underserved by existing software solutions
• Concentrated geographically for efficient sales

Start narrow. Master one vertical before expanding. Use your core app dashboard to track which segments convert best, then double down on what works.

The data shows a clear opportunity in service-based SMEs across developed economies. Now it’s your turn to act.

FAQs

What defines a high-growth vertical for SaaS?

A high-growth vertical is one with market expansion (tertiary/quaternary sectors), concentration (enough target companies in close range), underserved needs (not enough existing solutions to meet demand), and monetisation potential (€500k+ companies). Look at many service industries in the EU & the US with SMEs.

Should I target micro-enterprises or small businesses?

Target small to micro-enterprises (10-49 Employees). Despite accounting for 92% of EU businesses, micro-enterprises often have small budgets and simpler requirements. SMBs represent higher annual contract values and more complex needs, making them a prime target for SaaS investment.

What’s the difference between the tertiary and quaternary sectors?

The tertiary sector is also known for general services (such as retail, hospitality, and transport). The quaternary sector deals with information-based services (IT, consulting, R&D, education). Software adoption and prices both grow, but Industries of the Quaternary usually adopt software faster and pay higher prices.

How do I choose between public- and private-sector customers?

Pick the private sector if you need rapid revenue and don’t have many sales resources. Go public sector if you are comfortable selling 12+ month sales cycles and a complex procurement process, but want higher contract values and guaranteed recurring revenue. Most SaaS startups start with private-sector customers.

What role does geographic focus play in vertical selection?

Geographical concentration is important for sales productivity. Local businesses need to be on the ground and network. Regional Strategies Include National Businesses. Global ventures want greater product maturity but represent bigger contracts. Only target local or national, then broaden as you establish product-market fit.