Facebook Says Apple’s Privacy Changes Hurt Digital Ad Measurement

Facebook Inc. said that Apple Inc.’s recent changes to enhance privacy for users of its mobile operating system are impeding tools that the social-media giant uses to help advertisers measure the effectiveness of their campaigns.

In a blog post Wednesday, Graham Mudd, Facebook’s vice president of product marketing, said the company has heard from many advertisers that privacy changes in the online advertising industry have had a greater-than-expected impact on their operations.

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