

The software, which Apple and Google now refer to by the softer-sounding term "exposure notification" instead of "contact tracing," is due to be released on May 1. Project Bubble also required that Apple join forces with its historic rival, Google, to co-develop technology that could be used by health authorities in countries around the world. That speed of development was highly unusual for Apple, a company obsessed with making its products perfect before releasing them to the world.

By the end of the month, Google had officially come on board, and about a week later, the companies' two CEOs Tim Cook and Sundar Pichai met virtually to give their final vote of approval to the project. Within a few weeks, the Apple project - code-named "Bubble" - had dozens of employees working on it with executive-level support from two sponsors: Craig Federighi, a senior vice president of software engineering, and Jeff Williams, the company's chief operating officer and de-facto head of healthcare.
