Adaptive Software Development (ASD) is an agile methodology that emphasizes flexibility, collaboration, and continuous learning in the software development process. Introduced by Jim Highsmith, ASD is designed for projects with rapidly changing requirements or high levels of uncertainty, making it an alternative to traditional linear methodologies like Waterfall.

ASD is rooted in three core phases: Speculate, Collaborate, and Learn.

Speculate replaces traditional planning with adaptive planning, acknowledging that requirements may evolve during the project. Teams define a broad vision of the project’s goals but remain open to changes.
Collaborate focuses on teamwork, emphasizing communication and the collective intelligence of the team to solve problems and develop innovative solutions. Collaboration extends beyond the development team to include stakeholders and end-users.
Learn involves continuous feedback and iterative improvement. Teams analyze what worked, what didn’t, and what could be improved in subsequent iterations.
ASD promotes iterative development, where small, functional increments of the software are delivered frequently. This approach ensures that feedback can be incorporated quickly, reducing the risk of building a product that doesn’t meet user needs.

Key principles of ASD include:

Mission-driven planning, where goals take precedence over rigid schedules.
Feature-based delivery, emphasizing the completion of valuable features over tasks.
Timeboxing, setting fixed time periods for each iteration to maintain momentum.
ASD aligns closely with modern agile practices like Scrum and Kanban but distinguishes itself with its focus on adaptability and learning. It is particularly suited for dynamic environments like startups or industries with rapidly changing technology trends.

By embracing uncertainty and fostering a culture of innovation, ASD enables teams to build software that aligns closely with user needs, even in complex and unpredictable scenarios.