Software development is the process of creating software programs, applications, and systems that run on various devices, such as computers, smartphones, and tablets. It involves a wide range of activities, including planning, design, coding, testing, and maintenance.

Software development can be divided into different stages, starting with requirements gathering and analysis, followed by design, implementation, testing, and deployment. The development process is typically iterative, with developers continually refining and improving the software based on feedback and testing.

The primary programming languages used in software development include Java, Python, C++, and JavaScript, among others. Developers also use a variety of tools and frameworks, such as Integrated Development Environments (IDEs), version control systems, and bug tracking software, to streamline the development process and improve efficiency.