A. Use an SCP in Organizations to implement a deny list of AWS servers. Apply this SCP at the level. For any specific exceptions for an OU, create a new SCP for that OU and add the required AWS services to the allow list.
B. Use an SCP in Organizations to implement a deny list of AWS service. Apply this SCP at the root level and each OU. Remove the default AWS managed SCP from the root level and all OU levels. For any specific exceptions, modify the SCP attached to that OU, and add the required AWS services to the allow list.
C. Use an SCP in Organizations to implement a deny list of AWS service. Apply this SCP at each OU level. Leave the default AWS managed SCP at the root level. For any specific executions for an OU, create a new SCP for that OU.
D. Use an SCP in Organizations to implement an allow list of AWS services. Apply this SCP at the root level. Remove the default AWS managed SCP from the root level and all OU levels. For any specific exceptions for an OU, modify the SCP attached to that OU, and add the required AWS services to the allow list.