SD, or Secure Development, refers to the integration of security practices throughout the software development lifecycle. This approach ensures that security is considered at every stage, from initial design to deployment and maintenance. Secure Development includes threat modeling, secure coding standards, code reviews, vulnerability assessments, and regular security testing. By embedding these practices early and continuously, organizations reduce the risk of vulnerabilities and improve the resilience of their applications against cyber threats. SD is vital for compliance with industry regulations and for protecting sensitive data in today’s threat landscape.