Discovery phase

FunctionalphaseContent.functionalSpecification.headerTitle2Specification

A clear, detailed document outlining how the system works—including inputs, outputs, behaviors and rules.

Purpose & value

We turn business goals and user needs into clear technical requirements. A strong functional specification keeps everyone aligned—developers know exactly what to build, and QA knows exactly what to test. This step reduces rework, avoids misunderstandings and ensures the product behaves as expected.

When to use

When clarity is needed between business, design and engineering
After features are defined
Before development begins
When clarity is needed between business, design and engineering
After features are defined

Our process


01List all required features

02Document roles, logic and system rules

03Link to supporting user journeys and flow diagrams

04Add edge cases, validations and exceptions

05Share with developers, QA and client for sign-off
Case study visual

Who’s involved

Project managerDeveloperQuality assurance (QA)Client team

Deliverables

Feature list with detailed logic, rules and exceptions

Case study

For an admin dashboard project, we created a detailed functional spec that covered every logic scenario, including edge cases. This reduced back-and-forth during development and cut rework by 60%.


The service pack

User stories

Simple, structured descriptions of product features from the user's point of view. They help developers understand the "why" behind each feature.

Test case

Structured testing plans created early to ensure smooth and reliable development. Sets the foundation for a high-quality product.

Manual testing

Hands-on testing to ensure every screen and function behaves as expected.

Beyond the Labs

Explore all

No blog found

SAY
Say Hello
HELLO
Get started

Let's build digital products that are simply awesome!

SAY
Say Hello
HELLO
Get started

Let's build digital products that are simply awesome!

Contact Senna Labs at :

hello@sennalabs.com28/11 Soi Ruamrudee, Lumphini, Pathumwan, Bangkok 10330+66 62 389 4599
© 2022 Senna Labs Co., Ltd.All rights reserved. | Privacy policy