Case StudyStream Team: Designing The Feature - Boosting Business Performance with Test Driven Development

ASOS, a leading online fashion retailer, faced several challenges in maintaining the quality and reliability of its rapidly evolving e-commerce platform. Frequent changes and updates often led to bugs and performance issues that impacted the user experience. The existing testing methodologies were insufficient to keep pace with the development speed, leading to delayed releases and increased costs due to post-release bug fixes.

Boosting Business Performance with Test Driven Development

The Solution

ASOS adopted Test Driven Development (TDD) as a core practice in their software development lifecycle. This approach involved several strategic steps:

  • Early Integration of TDD: TDD was integrated into the development process from the very beginning, ensuring that tests were written before the actual code. This shift ensured that code met the desired functionality and quality standards from the outset.
  • Comprehensive Training: Developers across teams were trained extensively in TDD practices. This training included workshops, mentoring, and continuous learning sessions to ensure consistent and effective application of TDD principles.
  • Automated Testing Frameworks: ASOS implemented automated testing frameworks that supported TDD, allowing for quick and efficient execution of tests. These frameworks facilitated continuous testing and integration, providing immediate feedback to developers.
  • Collaboration and Code Reviews: Emphasizing collaboration, code reviews became a critical part of the development process. Peer reviews ensured that TDD practices were followed diligently and helped maintain high code quality.
  • Incremental Development: Projects were broken down into smaller, manageable units, enabling incremental development and testing. This approach minimized the risk of large-scale integration issues and facilitated faster delivery of features.

Outcomes achieved

The integration of TDD into ASOS's development process led to several positive outcomes:

  • Improved Code Quality: The rigorous testing regime ensured higher code quality, reducing the number of bugs and issues that reached production.
  • Faster Time-to-Market: With fewer post-release issues and a more streamlined development process, ASOS was able to release updates and new features more quickly.
  • Cost Savings: Early detection and resolution of issues through TDD significantly reduced the costs associated with post-release bug fixes and maintenance.
  • Enhanced Team Collaboration: The collaborative approach fostered by TDD practices improved communication and coordination among team members, leading to a more cohesive and productive development environment.
  • Better User Experience: Higher code quality and reliability translated into a smoother and more consistent user experience, contributing to increased customer satisfaction and retention.

Watch the full case study

ZeroBlockers Docs

Teams, processes, practices, artifacts and more...

We're busy putting the final touches on our ZeroBlockers guide. The guide will provide a comprehensive overview to the ZeroBlockers framework, including detailed descriptions of the key processes, practices and artifacts produced by each of the five core ZeroBlockers team types.

Subscribe for updates on when the guide will be available (we're targeting the end of July.)

ZeroBlockers giude screenshot