Federighi's official bio says: "Craig oversees the development of iOS, macOS, and Siri".
Federighi's profile on Apple's Leadership page has been updated to reflect the change.
Apple had introduced Siri in iPhone in 2011 but it lost its popularity due to the advent of Amazon's Alexa and Alphabet Inc.'s Google assistant. Just last month it released a study on its website showing how deep learning, a method for developing AI, is used in Siri's voice.
Apple's Siri has a new boss.
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The potential here is truly massive, we'll just have to wait and see whether developers bite or not. Ybarra says that's "based on developer interest".
The two companies said the partnership between their voice assistants was created to highlight the strength of each respective piece of software, and provide customers with the benefits of both. Unlike Siri, it lets users control the Samsung S8 smartphone's settings and many of its functions, though it sometimes struggles with actions at which Siri excels, such as music playback.
First spotted by Apple Insider, the voice assistant is now under the purview of Craig Federighi, Apple's senior vice president of software engineering.
Prior to his return, Craig worked at NeXT, followed by Apple, and then spent a decade at Ariba, an internet e-commerce pioneer where he held several roles including chief technology officer.
Federighi, a senior vice president, oversees those operating systems.