Describe the main stages and sequence of actions in the project development process

The main stages of project development typically include:

1. Requirements analysis — gathering and clarifying customer requirements, understanding goals and constraints.
2. Design — creating the system architecture, selecting technologies, developing data models and interfaces.
3. Development — writing code, implementing functionality according to specifications.
4. Testing — verifying functionality, identifying and fixing bugs.
5. Deployment — deploying the system in a production environment.
6. Support and maintenance — fixing bugs, updating and improving functionality.

The sequence of actions usually follows a logic from analysis to deployment, but in agile methodologies (for example, Agile), stages can be iterative.