Which AWS services will require the use of a VPC?

Explanations:

Amazon S3 is a fully managed object storage service that does not require a VPC for access. It can be accessed over the internet directly without needing to be within a VPC.

Amazon Elastic File System (EFS) is a managed file storage service for use with Amazon EC2 instances. It requires a VPC as it can only be mounted by EC2 instances within the same VPC.

Amazon Cognito is a service for user authentication and access control. It operates independently of a VPC and can be accessed via the internet.

Amazon DynamoDB is a fully managed NoSQL database service that does not require a VPC for access. It can be accessed over the internet without needing to be in a VPC.

Amazon EC2 is a virtual server service that requires a VPC for deployment. EC2 instances must be launched within a VPC to be part of the AWS network infrastructure.