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Your company has decided to make a major revision of their API in order to create better experiences for their developers. They need to keep the old version of the API available and deployable, while allowing new customers and testers to try out the new API. They want to keep the same SSL and DNS records in place to serve both APIs. What should they do?
Correct Answer: D
A is not correct because a single load balancer with URL maps is sufficient. B is not correct because it goes against the requirements. The company wants to keep the old API available while new customers and testers try the new API. C is not correct because it is not a requirement to decommission the implementation behind the old API Moreover, it introduces unnecessary risk in case bugs or incompatibilities are discovered in the new API. D is correct because an HTTP(S) load balancer can direct traffic reaching a single IP to different backends based on the incoming URL.