Is the default number of VPCs allowed in an AWS region 4?

In AWS, the default limit for the number of Virtual Private Clouds (VPCs) allowed in a region is 5, not 4. This limit is applicable across all standard AWS regions. The flexibility of AWS allows users to request an increase in this limit if their use case demands it, but the default consideration is indeed set to 5.

It’s important to be aware of these limits because when designing cloud architectures, staying within the constraints of the service quotas is crucial for both operational efficiency and compliance. The correct response is therefore based on the foundational understanding of AWS service limits, particularly concerning VPCs in different regions.