An organization is moving away from an on-premises infrastructure. (Digital Leader)

Correct answer: A) Built-in security when moving their data to the cloud.
Here's why:

A) Considering built-in security when moving their data to the cloud is essential to ensure the protection of sensitive information. Cloud service providers offer various security features and capabilities, such as encryption, access controls, identity management, and threat detection, to safeguard data against unauthorized access, breaches, and cyber threats.

B) While data encryption keys are an important aspect of data security, they are not a replacement for perimeter security. Perimeter security measures, such as firewalls, network segmentation, and intrusion detection systems, help protect an organization's network and infrastructure from external threats. Encryption keys are used to encrypt and decrypt data to ensure confidentiality, but they do not provide the same level of protection as perimeter security measures.

C) Optimizing cost management with a capital expenditure (CapEx) model may not be relevant when moving to the cloud, as cloud computing typically operates on an operational expenditure (OpEx) model. Cloud services are typically billed based on usage, allowing organizations to pay only for the resources they consume without the need for significant upfront investments in hardware and infrastructure.

D) Increased hardware capacity may not be a primary consideration when moving data to the cloud, as cloud services offer scalable infrastructure that can be adjusted based on demand. Cloud providers manage hardware capacity, allowing organizations to scale resources up or down dynamically to accommodate changing workload requirements without the need for physical hardware expansion.

Therefore, A) Built-in security when moving their data to the cloud is the most important consideration for the organization when transitioning from on-premises infrastructure to the cloud to ensure the protection of their information assets.