A Practical Comparison

Custom Software with Cultural Design vs. COTS SaaS

When businesses evaluate software solutions, the choice often comes down to two paths: building custom tailored software solutions that can be aligned to their culture and workflows, or adopting a commercial off-the-shelf (COTS) SaaS product that is feature rich and commonly adopted. Both can be cloud-based, scalable, and secure—but the differences in cost, flexibility, and long-term value are significant. It is not enough to weigh features and the number of reports. You must consider the benefits of both options and weigh you needs on several scales.

Intro

The Landscape of Pre-Packaged Systems

Enterprise Resource Planning (ERP), Manufacturing Execution Systems (MES), and Material Requirements Planning (MRP) are well-established solutions that offer a standardized approach to various business functions. ERP combines data and processes across departments into a single integrated system. MES focuses on production processes and real-time data tracking, while MRP ensures optimal inventory management.

These systems are designed to cater to a wide array of businesses, which means they might not address the unique complexities of individual operations. While they can provide a solid foundation, they often require extensive customization to align with specific workflows, leading to increased costs and implementation timelines.

Tailored Software Solutions

Definition and Purpose

    • Custom Software with Cultural Design
      Built specifically for your organization, this software reflects your internal processes, terminology, and decision-making culture. It’s designed to fit your business—not the other way around.
    • COTS SaaS Software
      Ready-made, subscription-based software that serves a broad market. It’s fast to deploy and often includes best practices, but may require your team to adapt to its structure. If your processes are pretty standard or you are looking for software with accounting built in cots saas software will usually fit the bill.

Read about how 1 company chose custom software in their build or buy decision. https://www.industryweek.com/technology-and-iiot/video/55296538/build-or-buy-your-mes-lessons-from-hexagon-manufacturing-intelligence

Cost Category Custom Software (Year 1) COTS SaaS (5-Year Total)
Initial Development $50,000 – $500,000 $5,000– $50,000 setup
Annual Maintenance & Support $5,000 – $20,000 Included in subscription
Subscription Fees $0 $20,000 – $100,000/year
Customization & Integration Included in build $5,000 – $150,000
5-Year Total $70,000 – $600,000 $100,000 – $650,000

  Flexibility and Fit

    • Custom Tailored Software Solutions
      • Built to match your workflows exactly.
      • Easier to evolve with your business.
      • No unnecessary features or bloat.
    • COTS SaaS
      • May require process changes to fit the tool.
      • Feature updates are vendor-driven.
      • Limited customization without extra cost.

Speed to Value

    • COTS SaaS in a perfect world you can be running in 2 weeks.  With customizations and learning it is more realistic to say 3 to 6 months.
    • Custom Software takes longer—typically 3 to 12 months—but delivers a tailored experience from day one.

Risk and Control

    • Custom Software
      • You own the code and data.
      • Full control over updates, security, and compliance.
      • Higher risk if internal resources are limited.
    • COTS SaaS
      • Vendor handles security, uptime, and compliance.
      • Risk of vendor lock-in or product discontinuation.
      • Less control over roadmap and data portability.

When to Choose What

Your situation will dictate how and when you choose a solution. A lot of companies believe that they don’t have the time or knowledge to build custom software so they settle for software that fit what they do 85% of the way. There are great reason to use COTS software for things like Accounting that is very standard.  Word processing and even file management.  However, when it comes to your best in class business processes that encompass your culture and the nuances of your processes custom software will get you 100% of the way.

Situation Best Fit
You need fast deployment COTS SaaS
Your processes are unique or complex Custom Software
Budget is tight in early years COTS SaaS
You want long-term strategic alignment Custom Software
You need to integrate deeply with internal systems Custom Software