Among the materials made public last week by American Express Global Business Travel was a chart showing how the Net Promoter Score for Egencia and Amex GBT exceeded those of some key rivals, in some cases by quite a bit. GBT didn't conduct the study; McKinsey & Co. ran it in July and August for GBT's merger partner, special purpose acquisition company Apollo Strategic Growth Capital. Apollo declined to disclose full details about the methodology or sample.
Amex GBT CEO Paul Abbott said in prepared remarks published last week that the company had "the highest . . .