The expansion directions in the AKF expansion cube and their corresponding concerns are: the X- axis expansion focuses on the division of responsibilities in the application, such as data types, and…

Question

Options

• ATrue
• BFalse

• A
  16% (7)
• B
  84% (38)

Explanation

Option B is correct because the question has the X-axis and Y-axis definitions swapped. In the AKF Scale Cube, the X-axis represents horizontal duplication - cloning the entire application or service across multiple instances ("add machines to solve problems"), not division of responsibilities. The Y-axis is where functional decomposition occurs, meaning splitting the application by data types, service responsibilities, or transaction types. The Z-axis description in the question is closer to correct, as it does relate to data partitioning such as sharding by region or customer segment, though "prioritization" is not the most precise framing. Option A is wrong because accepting the swapped definitions as true would fundamentally misrepresent how the cube guides scaling decisions.

Memory tip: Think X for "eXact copies" (clone everything horizontally), Y for "Your services split apart" (decompose by function), and Z for "Zones or segments" (partition by data slice or geography).

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