exponential growth
Used in computing, mathematics, and general contexts to describe growth that accelerates rapidly over time.
The amount of data is experiencing exponential growth.
The computational complexity of this algorithm shows exponential growth.
Synonymous; 指数関数的成長 is a slightly more formal or mathematical variant.
Compound of 指数 (index, exponent) + 的 (-like) + 成長 (growth). A straightforward calque from English 'exponential growth'.