course
Easy functional Sizing
ISO/IEC DIS 25986 – Functional Size Measurement (FSM) Method
Description
Easy Functional Sizing (EFS) is the next generation of Functional Size Measurement (FSM), designed to provide a simple, practical and standardized approach for measuring business functionality.
Based on the upcoming ISO/IEC DIS 25986 standard and aligned with the established Nesma Functional Size Measurement method (ISO/IEC 24570), EFS enables organizations to objectively determine the functional size of software without being influenced by technology, implementation choices or development effort.
The course explains how Function Points provide a common language between business and IT, enabling better estimation, benchmarking, portfolio management and output-based contracting. Participants learn how EFS complements Agile methodologies by combining Function Points for business value measurement with Story Points for team planning.
During the training participants learn the EFS counting principles, classify user functions into Logical Files, Input Functions and Output Functions, apply official counting guidelines, determine both product and project size and measure software maintenance using Enhancement Function Points (EFP).
Audience Profile
Professionals involved in software development, software estimation, Agile delivery and software governance, including Product Owners, business analysts, functional analysts, project managers, programme managers, software suppliers and clients involved in output-based contracting.
Learning Goals
 Explain the purpose and benefits of Functional Size Measurement. | Understand  |
| Describe the principles of Easy Functional Sizing. | Understand |
| Differentiate between Function Points and Story Points. | Analyze  |
| Apply the official EFS counting guidelines. | Apply  |
| Calculate the functional size of new software developments. | Apply |
| Assess the functional size impact of software maintenance and enhancements. | Evaluate  |
| Distinguish between Product Size and Project Size. | Analyze |
Prior Knowledge
- A basic understanding of software development, Agile methodologies (Scrum or SAFe) and software project management is recommended.
- Familiarity with business requirements or user stories is beneficial.
- No prior experience with Function Point Analysis is required.
Subjects
Module 1: Introduction to Functional Size Measurement
Lessons
- Why organizations measure software functionality
- Business value of Function Points
- Functional Size Measurement standards
- Positioning EFS within ISO standards
- EFS in output-based contracting
- Function Points versus Story Points
- Measuring business value instead of development effort
Module 2: Easy Functional Sizing (EFS)
Lessons
- Principles of Easy Functional Sizing
- EFS objectives
- System boundaries
- Users and elementary processes
- Logical Files (LF)
- Input Functions (IF)
- Output Functions (OF)
- Function Point values
- Practical examples
Module 3: Counting Guidelines
Lessons
- Identifying Logical Files
- Identifying Input Functions
- Identifying Output Functions
- General counting rules
- Handling reference tables
- Security and supporting functionality
- Avoiding common counting mistakes
- Applying official EFS guidelines
Module 4: Product Size versus Project Size and Maintenance
Lessons
- Product Size versus Project Size
- Measuring new development
- Measuring Agile development
- Functional maintenance
- Measuring additions, modifications and removals
- Enhancement Function Points (EFP)
- Impact Factors
Module 5: Practical Exercises
Lessons
- Counting user functions
- Measuring complete applications
- Product and project sizing exercises
- Maintenance scenarios
- Group discussions and validation of results
Schedule
All courses can also be conducted within your organization as customized or incompany training.
Our training advisors are happy to help you provide personal advice or find Incompany training within your organization.
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