statista上面有一个Size of the public cloud platform as a service (PaaS) market worldwide from 2015 to 2022 (更新时间 by Arne Holst, May 4, 2020):
businesswire上面Global Platform as a service (PaaS) Market Report 2020 - ResearchAndMarkets.com (December 04, 2019 09:53 AM Eastern Standard Time):
The global platform as a service (PaaS) market was valued at about $29.58 billion in 2018 and is expected to grow to $52.4 billion at a CAGR of 15.4% through 2022.
Gartner的[Gartner Says Nearly 50 Percent of PaaS Offerings Are Now Cloud-Only]4:
The total PaaS market revenue is forecast to reach $20 billion in 2019, and to exceed $34 billion in 2022, according to the latest forecast from Gartner.
Planet Market Reports的[Platform-as-a-service PaaS Market 2019 | Global Market Size, Share, Supply, Demand, Segments and Forecast 2024]5:
The global platform as a service market size will grow by USD 31.4 billion during 2024.