Easy Functional Sizing (EFS) by Nesma

Measuring Software Value - The Foundation of Digital Transparency!

Easy Functional Sizing (EFS)

Measure Faster. Align with Agile. Stay Accurate. Full Transparency through Objective Metrics!

The world of software development is moving faster than ever. Traditional, detailed sizing methods often feel too heavy for modern, fast-paced Agile and DevOps environments. That is why Nesma developed Easy Functional Sizing (EFS)—the simplified, international standard for measuring software size without the complexity of traditional "tomes."

What is EFS?

Easy Functional Sizing (ISO/IEC 25986) is a streamlined evolution of the classic High-Level Function Point Analysis. It was created specifically to remove the "thick manual" barrier, making functional sizing accessible to everyone—from veteran analysts to Scrum Masters and Product Owners.

It replaces complex complexity tables with a simplified model that yields results statistically comparable to detailed counts (with an average difference of less than 2%), but at a fraction of the time and effort.

The Core Components

EFS simplifies the measurement process by focusing on three main categories that are easy to identify in user stories or functional requirements:

Input Functions: Actions where the system receives data from the outside (e.g., adding a customer, updating a profile).
Output Functions: Actions where the system presents data to the user or external systems (e.g., reports, dashboards, exports).
Logical Data Collections: The data structures the system maintains or accesses (e.g., internal tables or external interfaces).

Why Choose Easy Functional Sizing?

⚡ Speed & Efficiency

Perform counts in minutes rather than hours. EFS is designed for "back-of-the-napkin" speed with professional-grade accuracy, allowing for quick estimations during sprint planning.

🤝 A Shared Language for Agile & DevOps

Story points are relative and team-specific; EFS provides an objective unit that stays consistent across different teams and technologies. This makes it the perfect bridge between technical teams and business stakeholders.

📉 Reduced Debate

By eliminating the fine-grained distinction between complex "EOs" and "EQs," EFS removes the common "counting debates" that slow down progress. The rules are clear, concise, and fit onto just four pages.

🌍 Global Standard

While it is "Easy," it is also official. EFS is an ISO-recognized method, ensuring that your measurements are respected in international contracts, benchmarking, and performance audits.