With 22 years under his belt, Satya Nadella is the con­sum­mate Microsoft insider. But don’t think that expe­ri­ence made him a shoo-​​in for the top job.

One reason Microsoft went nearly six months without a CEO was because exec­u­tives spent time looking for their new one out­side the com­pany. Microsoft is a case study of what so many aging tech­nology com­pa­nies — from Intel to Hewlett Packard — are going through.

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