Answer: Performance is improved over running in a single Availability Zone.

## Explanation Running an application across two Availability Zones provides **high availability and fault tolerance**, which is the primary benefit. While option A mentions "performance improvement," the main advantage is actually **resilience and disaster recovery**. **Key benefits of multi-AZ deployment:** - **Fault tolerance**: If one Availability Zone fails, the application continues running in another zone - **High availability**: Reduces downtime and improves service reliability - **Disaster recovery**: Provides geographic redundancy for business continuity **Important clarifications:** - **Performance**: While there might be some performance benefits due to load distribution, this is not the primary advantage - **Security**: Multi-AZ deployment doesn't inherently provide better security than single AZ - **Cost**: Running across multiple AZs typically **increases** costs due to additional infrastructure, not reduces them The correct understanding is that multi-AZ deployment provides **resilience and high availability** rather than performance improvements as the main benefit.

Author: Ritesh Yadav