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The core tenet of Zero Trust is thatno entity—internal or external—should be trusted by default. Every request for access must be authenticated, authorized, and encrypted based on granular access policies and continuous validation of identity, device health, location, and behavior.

ZT eliminates reliance on traditional network perimeter models (which B and A describe), focusing instead on microsegmentation and dynamic policy enforcement to prevent lateral movement within a network.

This approach is detailed inDomain 7: Infrastructure Securityof the CCSK guidance. It emphasizes identity-aware access control, continuous monitoring, and contextual risk assessment as foundational elements of a secure Zero Trust framework.

One of the primary advantages of including Static Application Security Testing (SAST) in Continuous Integration (CI) pipelines is that it allows developers to identify code vulnerabilities early in the development process. By scanning the source code for potential security issues as it is being written and integrated into the pipeline, SAST helps to catch vulnerabilities before they make it to later stages of development or production, improving overall security and reducing the cost and effort of fixing issues later.

While SAST does not directly impact the speed of deployment, runtime performance, or user interface, its early identification of security flaws contributes to better code quality and a more secure application.

The best way for organizations to establish a foundation for safeguarding data, upholding privacy, and meeting regulatory requirements in cloud applications is by integrating security at the architectural and design level. This approach ensures that security is built into the application from the start, rather than being added as an afterthought. By incorporating security features like encryption, access controls, and compliance measures during the design and development phases, organizations can better protect sensitive data, reduce vulnerabilities, and meet regulatory requirements more effectively.

While implementing encryption, multi-factor authentication, conducting audits, and deploying monitoring tools are also important, they are part of the overall security strategy rather than the foundational approach. Integrating security into the architecture ensures a more comprehensive, proactive security posture.

SaaS enables users to access hosted applications managed by the provider, with only minor configuration by the customer. Reference: [CCSK Study Guide, Domain 1 - Service Models]

DNS logs capture information on domain name resolution, while Flow logs capture details about network traffic, including source, destination, and protocol. Reference: [CCSK Study Guide, Domain 7 - Infrastructure & Networking]