Design conflicts in architectures prioritizing security and availability arise due to the differing requirements and trade$-$offs associated with each non$-$functional need.Security focuses on protecting data and systems from unauthorized access and ensuring data integrity and confidentiality. Key attributes include:Authentication: Verifying user identities.Authorization: Ensuring users have permission to access resources.Encryption: Protecting data in transit and at rest.Intrusion Detection: Monitoring for and responding to security breaches.Availability ensures that systems are operational and accessible when needed. Key attributes include:Redundancy: Having backup systems to take over in case of failure.Fault Tolerance: Designing systems to continue operating despite failures.Scalability: Ability to handle increased load.Disaster Recovery: Plans and systems to recover from catastrophic failures.Potential Design Conflicts:Performance Overhead: Security measures like encryption and intrusion detection can introduce latency and processing overhead, potentially reducing system availability.Resource Allocation: Redundant systems and fault tolerance mechanisms for availability may require additional resources, which could be constrained by security needs.Complexity: Implementing both high security and high availability can increase system complexity, making it harder to manage and maintain.Access Control: Strict security policies may limit access to critical systems, potentially impacting availability during emergencies.Criteria for Classification:Required Attributes: Essential for the primary function $($e$.$g$.,$ encryption for security, redundancy for availability$).$Variable Attributes: Can be adjusted based on specific needs and constraints $($e$.$g$.,$ level of encryption, number of redundant systems$).$By understanding these attributes and their potential conflicts, architects can make informed decisions to balance security and availability in their designs.