Which software development methodology places a strong emphasis on adaptability, collaboration, and customer feedback throughout the development process?

The software development methodology that places a strong emphasis on adaptability, collaboration, and customer feedback throughout the development process is Agile.

Here are the steps to understand why:

1. Software development methodologies are the frameworks used to structure, plan, and control the process of developing an information system.

2. There are several methodologies, including Waterfall, Spiral, and Agile, among others.

3. The Waterfall model is a sequential design process, often used in software development processes, where progress is seen as flowing steadily downwards (like a waterfall) through the phases of conception, initiation, analysis, design, construction, testing, production/implementation, and maintenance.

4. The Spiral model is a risk-driven process model generator for software projects. It combines aspects of the incremental build model, waterfall model, and prototyping model, but is distinguished by a set of six invariant characteristics.

5. Agile software development refers to a group of software development methodologies based on iterative development, where requirements and solutions evolve through collaboration between self-organizing, cross-functional teams.

6. Agile methods or Agile processes generally promote a disciplined project management process that encourages frequent inspection and adaptation, a leadership philosophy that encourages teamwork, self-organization and accountability, a set of engineering best practices intended to allow for rapid delivery of high-quality software, and a business approach that aligns development with customer needs and company goals.

7. Therefore, Agile is the software development methodology that places a strong emphasis on adaptability, collaboration, and customer feedback throughout the development process.