Google Cloud Digital Leader — Question 215

A hotel wants to modernize their legacy systems so that customers can make reservations through a mobile app.
What's the benefit of using an application programming interface (API) to do this?

Answer options

• A. They do not have to develop the end-user application
• B. They can deprecate their legacy systems
• C. They can transform their systems to be cloud-native
• D. They do not have to rewrite the legacy system

Correct answer: D

Explanation

The correct answer is D because using an API allows the hotel to interface with their existing legacy systems without the need to completely rewrite them. Options A and B are incorrect because an API does not eliminate the need for an end-user application or allow for the deprecation of legacy systems. Option C is also not correct as transforming to cloud-native is a separate process and not guaranteed by simply using an API.