Question

The principle "design for failure and nothing will fail" is very important when designing your AWS Cloud architecture. Which of the following would help adhere to this principle?

1) Using multiple Availability Zones
2) Using a single Availability Zone
3) Using a single EC2 instance
4) Using a single S3 bucket

Answer 1

The best way to adhere to the principle of designing for failure in AWS Cloud architecture is by using multiple Availability Zones, as this avoids single points of failure and ensures high availability and resilience.

Step-by-step explanation:

The principle "design for failure and nothing will fail" emphasizes the need for building resilient and tolerant cloud architectures that can handle outages and disruptions without significant impact on operations. Adhering to this principle would involve strategies such as:

• Using multiple Availability Zones ensures that even if one zone goes down, others can continue to function, thus maintaining the availability of applications and services.
• Using a single Availability Zone would not support this principle, as it introduces a single point of failure.
• Using a single EC2 instance also represents a single point of failure and thus contradicts the principle of designing for failure.
• Using a single S3 bucket for storage can be seen as acceptable if correctly configured as S3 is designed to be highly durable and available. However, for critical data, it may be wise to distribute data across buckets in multiple regions to mitigate risks such as regional disruptions.

Therefore, the option best supporting the principle would be Using multiple Availability Zones, which enhances the resilience and fault tolerance of the AWS Cloud architecture.