The specifications: Complete guide to succeed your projects

The specifications, often abbreviated in CDC, is a crucial document in any project. Whether software development, website creation, or even construction. It defines the objectives, requirements and constraints of the project. This allows all stakeholders to understand what is expected and work effectively towards a satisfactory end result. In this article, we will explore in depth what a specification is. Why it is essential, and how to write an effective CDC to ensure the success of your project.

What is a specifications?

Definition of the specifications, it is a document that describes in detail the specifications of a project. Including objectives, features, technical constraints, planning and budget.

It serves as a common reference for all parties involved in the project. Including customers, project managers, developers and designers. A good specification clarifies expectations, reduces the risk of misunderstandings. And guides the project efficiently.

Why is the specification important?

A well-developed specification has many advantages:

  • Clarification of expectations: By clearly defining the objectives and requirements of the project. A CDC minimizes the risk of misunderstandings between stakeholders.
  • Risk management: By identifying constraints and deadlines from the beginning. A specification allows to better anticipate potential challenges and manage them proactively.
  • Cost control: By specifying the necessary resources and budgetary limits. A CDA helps to avoid cost overruns and keep the project within the agreed financial limits.
  • Project orientation: A well-structured specification serves as a roadmap for the project. Guiding all stages of its realization and ensuring consistent progress towards the set goals.

When do I need a specification?

Specifications are required in various situations. Especially when a project is complex or requires a detailed understanding of objectives and requirements.

It is particularly indispensable in software development projects, website design, construction. And in any project where clarity of expectations is crucial. When multiple stakeholders are involved or when significant resources are committed. A CDC is recommended to align efforts and reduce the risk of misunderstandings. In short, specifications are essential when precision, planning and effective project management are priorities.

How does a specification work?

A specification works as a detailed guide that defines the objectives, requirements and constraints of a project. Here’s how it typically works:

  • Needs identification: The process begins with the identification of the needs of the client and stakeholders. Collecting their requirements and expectations for the project.
  • Goal Setting: It clearly sets out the goals to be achieved. By describing what the project must accomplish and the expected results.
  • Feature Specification: It details the features and characteristics that the final product or service must have. By describing their behaviour and interactions.
  • Constraint Setting: The CDA identifies technical, financial, time and other constraints. Which must be taken into account when carrying out the project.
  • Planning and organizing: It often includes project planning, describing the steps to follow. The necessary resources, deadlines and responsibilities of the various stakeholders.
  • Validation and approval: Once written, it is usually validated by the client and relevant stakeholders. To ensure that it accurately reflects their needs and expectations.
  • Use as a reference: Throughout the project, it serves as a common reference for all decisions and actions. Guiding the work of teams and ensuring that the project progresses according to expectations.

In summary, a specification works as a central document that guides all phases of a project. From its initial planning to its final realization. By ensuring that objectives are met effectively and in line with stakeholder expectations.

How to write an effective specification?

To write an effective specification, follow these key steps:

  • Define the project objectives: Start by clearly identifying the project objectives and expected results.
  • Establish functional specifications: Describe in detail the features and characteristics of the product or service to be developed.
  • Specify technical constraints: Identify technical constraints such as platforms. Programming languages and standards to be respected.
  • Set a schedule and budget: Determine the time frame and financial resources available for the project.
  • Define the validation criteria: Specify the criteria that will be used to evaluate the success of the project. And the conditions of its final acceptance.
    By following these steps and working closely with all stakeholders. You can create a complete and accurate specification that will lay the foundation for a successful project.
Read also: ChatGPT

Is the specification mandatory?

The need for specifications may vary depending on the type of project and the parties involved.

In many cases, especially in the field of software development, website design or construction. A specification is strongly recommended or even mandatory to ensure the success of the project.

Here are some reasons why specifications are often considered essential:

  • Clarification of expectations: Specifications clearly define the expectations of the customer and stakeholders. This reduces the risk of misunderstandings and frustrations throughout the project.
  • Risk management: By identifying constraints and defining requirements from the beginning of the project, it helps to anticipate and manage potential risks.
  • Cost control: By specifying the necessary resources and budgetary limits, it helps to avoid cost overruns and keep the project within the agreed financial limits.
  • Project orientation: A well-developed specification serves as a roadmap for the project, guiding all stages of its implementation and ensuring consistent progress towards the objectives set.

However, in some cases, such as for small projects or for very informal collaborations, formal specifications may not be required. However, even in these situations, it is often useful to have at least written documentation of project objectives and expectations to avoid misunderstandings.

In summary, although the specifications are not always mandatory. It is generally recommended to ensure clarity, effective management and overall success of projects.

Who draws up the specifications?

The specifications are usually drawn up by a project team composed of various stakeholders. This includes customer representatives, project managers, technical experts and end users. This team works together to define the objectives, requirements and constraints of the project. The client often plays a key role in identifying needs and expectations, while project managers coordinate the process of creating the specifications. Technical experts bring their expertise to define appropriate technical solutions, while end users provide valuable information about their needs and preferences. Ultimately, the specifications are the result of close collaboration between all parties involved in the project.

What is the role of a functional specification?

The main role of a functional specification (CDCF) is to define in detail the functional needs of a system or product. It describes the specific features that the product or system must have to meet the requirements of users and stakeholders. The CDCF serves as a common reference for developers, designers and other project team members, providing a clear basis for product design, development and validation. It helps align stakeholder expectations and ensure that the final product meets the agreed requirements and specifications. In summary, the CWDC plays a critical role in project planning and delivery by ensuring clarity and accuracy of functional requirements.


The specifications are an essential tool for the success of any project. By clearly defining objectives, requirements and constraints from the outset, a DCC helps to minimize risks, control costs and effectively guide project progress. By following good drafting practices and involving all stakeholders, you can create a solid specification that will serve as a foundation for the success of your project.

More Reading

Post navigation