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What is Behavior Driven Development?

Written by Ryan Marsh | Jan 2, 2024

Behavior Driven Development (BDD) is a pragmatic approach to bridging the communication gap between software developers, quality assurance professionals, and business stakeholders, ensuring that all parties have a clear and shared understanding of the software's functionality and requirements. BDD translates business objectives into precise, executable specifications, leading to more accurate software development, improved quality assurance, and a more efficient validation process. Unlike Agile, which often emphasizes broader principles and practices, BDD offers specific, tangible solutions to improve alignment between IT objectives and business goals.

How does it work?

Behavior Driven Development breaks down into three key practices: Discovery with Example Mapping, Formulation, and Automation.

1. Discovery with Example Mapping:

  • Problem: Misunderstandings due to vague requirements.
  • Solution: Teams hold collaborative sessions where they identify and discuss user stories, detailing their expected behaviors through concrete examples. They use Example Mapping to make these discussions visual, creating a clear and shared understanding of what the software should do.

2. Formulation:

  • Problem: Keeping everyone on the same page.
  • Solution: The examples from the Discovery stage are turned into structured "Given-When-Then" scenarios. This creates a uniform language for defining software behavior, ensuring developers, testers, and stakeholders are all aligned.

3. Automation:

  • Problem: Time-consuming manual testing.
  • Solution: The “Given-When-Then” scenarios are then automated using tools such as Cucumber or SpecFlow. This speeds up testing, ensures consistency, and turns your specifications into a living documentation that evolves with your application, providing clarity and a reference point for the entire team.

By following these three practices, BDD makes sure that the software being developed aligns precisely with business needs, streamlining the development process, and ensuring higher quality outputs. It turns vague ideas into concrete specifications, speeds up validation, and provides clear, up-to-date documentation for everyone involved.

What is “living documentation”?

Documentation is crucial in software development, serving as a reference guide for what has been built, and a blueprint for what needs to be developed. However, traditional documentation can quickly become outdated, leading to confusion and misalignment. Here’s where living documentation steps in.

Keeps Up with Changes:

  • Problem: Outdated documentation.
  • Solution: Living documentation is directly tied to your automated BDD scenarios. When the software changes, the documentation updates automatically. This ensures that what you’re reading is always up-to-date with the current state of your application.

Enhances Communication:

  • Problem: Misalignment between teams.
  • Solution: Because living documentation uses plain language and is easily accessible, it acts as a common ground for developers, testers, and stakeholders. Everyone has access to the same information, fostering clear communication and shared understanding.

Streamlines Onboarding:

  • Problem: Time-consuming onboarding of new team members.
  • Solution: New team members can refer to the living documentation to quickly get up to speed with the current functionalities and requirements of the application, significantly reducing the onboarding time.

Acts as a Single Source of Truth:

  • Problem: Conflicting information from different sources.
  • Solution: Living documentation provides a centralized and authoritative source of information about the system’s behavior, reducing ambiguity and ensuring consistency across the team.

By embracing living documentation, you ensure that your documentation is as agile as your development process, providing accurate, reliable information to everyone involved, and ultimately contributing to more efficient and effective software development cycles.

Taking the Next Steps with BDD

Behavior Driven Development is more than just a methodology—it's a catalyst for stronger collaboration, clearer communication, and higher quality software development. It empowers teams to turn business requirements into tangible and executable specifications, fostering a shared understanding and alignment across all stakeholders. The living documentation aspect ensures that your team is always on the same page, with up-to-date and accessible information at their fingertips.

Incorporating BDD into your development process marks the beginning of a journey towards more efficient workflows, reduced misunderstandings, and software that truly meets business needs. However, to reap the full benefits of BDD, it is crucial to ensure that your team is well-versed in its practices and understands how to apply them effectively.

We recognize that adopting a new methodology can be a significant undertaking, and we are here to support you in this transition. Our experts are ready to provide comprehensive training tailored to your team's needs, ensuring a smooth adoption of BDD practices and helping to make them a permanent and valuable part of your development process.

Investing in BDD training is investing in the future success of your projects and the satisfaction of your team. Don't let the potential for improved collaboration, clearer communication, and higher quality outputs pass you by. Contact us today to start a conversation about how we can help elevate your team's BDD practices and secure a stronger, more aligned future for your software development endeavors. Together, let's turn the promise of BDD into a reality for your team.