According to CloudScene data 6 of 110 countries with available information, as of January 2021 there were nearly 8,000 data centers globally.
Not even up to date...
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Data Center Market size was valued at USD 55.26 Billion in 2021 and is projected to reach USD 124.11 Billion by 2030, growing at a CAGR of 9.2% from 2022 to 2030.