You’re designing a multi-region deployment of your application on OCI. You want to use OCI’s global load balancing capabilities, but also require the WAF to protect against attacks close to the user. Which configuration provides the best balance between global load balancing and regional WAF protection?

Goal: Balance global load balancing with regional WAF protection near users.
Option A: Single WAF in one region creates a bottleneck and increases latency—insufficient.
Option B: GLB distributes globally to regional Load Balancers, each with a WAF, ensuring protection close to users—correct.
Option C: WAF before GLB centralizes protection, adding latency and a single failure point— incorrect.
Option D: Source IP routing with regional WAFs is less optimal than GLB’s health-based routing—less effective. Conclusion: Option B optimizes both goals. Oracle states: "OCI GLB distributes traffic across regions. Pair with regional Load Balancers and WAFs for localized protection and optimal performance." This supports Option B. Reference: Global Load Balancer Overview - Oracle Help Center (docs.oracle.com/en-us/iaas/Content/Balance/Concepts/globalbalance.htm).