Software Development Life Cycle and Waterfall Model

• Waterfall Model
  
• Requirements:
  • Create a High Level Requirements Document
  • Use Case Diagrams
    
• Big Bang Integrations:
  • Integration of applications/components developed individually in the last phases of project
  • This generally ends up with issues & major reason for technical debt’s
    
• Continuous Integration:
  • Here we integrate different components of the application from day 1 and ensure we run some integration tests
  • The basic idea is to fail fast and know the errors upfront.
• Agile Software Methodologies:
  • Refer Here for the Agile Manifesto
  • DevOps enhances the idea of agile by approach which is shift left
• The idea of DevSecOps is to make security shift left.
• What is that we can do for this shift left of Security
  • Code to be scanned for securiy vulnerabilities
  • Scanning application deployed in various test environments for security vulnerabilities
  • Reporting the security issues and eventually breaking build when security issues are reported.
• DevSecOps Manifesto