Your organization needs redundancy, but it also needs extremely fast (Digital Leader)

Correct answer: B) In different zones within a single region.
To achieve both redundancy and extremely fast communication (less than 10 milliseconds) between parts of the application in different virtual machines, placing the virtual machines in different zones within a single region is the most suitable option. Here's why:
A - In a single zone within a single region may not provide sufficient redundancy. If the entire zone experiences an issue, it could impact all the virtual machines in that zone.
B - Placing virtual machines in different zones within a single region allows for redundancy, as each zone operates independently. This setup provides fault tolerance and ensures that if one zone experiences issues, the application can still operate in other zones within the same region.
C - In multiple regions, using one zone per region, introduces additional latency as the virtual machines are distributed across different regions. This may not meet the requirement for extremely fast communication (less than 10 milliseconds) between the parts of the application.
D - In multiple regions, using multiple zones per region, also introduces additional latency as the virtual machines are distributed across different regions. While it provides redundancy within each region, the communication latency between regions may not meet the requirement for extremely fast communication.

In conclusion, option B, placing virtual machines in different zones within a single region, offers a good balance between redundancy and low-latency communication.