Software development and software testing are two closely related processes in software engineering.

Software Development

Software development is the process of designing, coding, testing, and maintaining software.

It involves the creation of computer programs, scripts, and other software components to solve specific problems or to meet certain requirements. 

The software development process typically involves the following steps:

  1. Requirements gathering and analysis
  2. Design
  3. Implementation or coding
  4. Testing
  5. Deployment
  6. Maintenance

Software Testing

Software testing is the process of evaluating a software product or system to determine whether it meets specified requirements and performs as expected. 

Testing can be performed at various stages of the software development process, including during development, after development, and before deployment.
Software testing can be classified into different types based on the objectives and scope of the testing, including functional testing, performance testing, security testing, usability testing, and more. The main goal of software testing is to identify and report defects, errors, and other issues, allowing developers to address and fix them before the software is released to users.

In summary, software development and testing are two crucial processes that work together to ensure the creation of high-quality software products. Software development involves designing and building software components, while software testing involves evaluating them to ensure they meet specified requirements and function as intended.