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Comment by coldtea | Hacker News Reader

That's not any real dependency as having millions of consumer installations...

The have iCloud abstracted and diversified anyway (also uses Azure, AWS, etc).

They use whatever tool is best for the job. Take a look at their careers site, you'll see they use all sorts of databases internally.

  Sr. Database Architect
  
  REQUIRED TECHNICAL SKILLS :
  RDBMS: Oracle
  NoSQL DB: MongoDB
  Columnar DB: Vertica
  OS: AIX, LINUX, Solaris
  Replication: Streams, Golden Gate

Apple actually no longer uses Azure. They use AWS (S3) and Google Cloud: https://www.apple.com/business/site/docs/iOS_Security_Guide.....

Wrong link?

No. The section about iCloud says:

  The encrypted chunks of the file are stored, without 
  any user-identifying information, using third-party 
  storage services, such as S3 and Google Cloud Platform.

The 2017 version of this document had "Azure" in this list. The 2018 version replaces it with Google Cloud.

Yeah, but it also says "such as", so it might not be exhaustive.

Oh, okay, I only searched by "Amazon", "AWS", and "Azure", and didn't find anything.

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