2018 年，中国公共和私有云 IT 基础架构的年度投资（包括供应商收入以及渠道加成）总计 120.1 亿美元，同比增长 74.7%，超出市场预期。IDC 预计，2019 年中国云 IT 基础架构的总投资将达到 151.7 亿美元，同比增长 25.5%。
2018 年第四季度，中国公有云 IT 基础架构支出同比增长 68.6%，相比 2018 年前三个季度有所放缓，增速自 2018 年以来第一次低于三位数。得益于公有云市场的激烈竞争，众多公有云运营商都在过去几年对 IT 基础架构进行了大量投资。相比 2015 年，2018 年的中国公有云运营商对 IT 基础架构支出已翻四倍，达到 74.5 亿美元。
与全球市场不同，中国的私有云基础架构市场也保持了高速的增长。2018 年相关支出增长 49.2%，达到 38.0 亿美元。自 2013 年 IDC 开始跟踪不同环境下的 IT 基础架构部署情况以来，中国云 IT 基础架构支出的增长速度均远高于全球市场。无论公有云还是私有云，相应 IT 基础架构支出在中国的增长速度都是全球增速的两倍左右。IDC 预测，中国云 IT 基础架构支出将继续保持高速增长，由 2018 年占全球市场 12% 左右，5 年后上升到全球市场 25% 左右。届时，中国私有云 IT 基础架构支出将超过美国，成为全球第一大市场。
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