A cybersecurity analyst is reviewing the network infrastructure of an organization that plans to implement network segmentation in order to improve security and performance. The organization has expressed interest in the ability to rapidly change network configurations in response to emerging threats. Which networking approach should the analyst recommend to meet the organization's needs?
Physical network segmentation by installing additional hardware firewalls
Implementation of VLANs to segment the network traffic
Software-defined networking
Ensuring traditional layered security with strict access control lists