Publications

29 Mar 2024
Video

Express HIIT with Siri

20 Mar 2023
Video

Step Interval with Siri

16 Feb 2022
Video

Cardio Yoga with Siri

05 Jul 2023
Video

Total Body Strength with Siri

June 2018 (Revised January 2020)
Case

Voice War: Hey Google vs. Alexa vs. Siri

By: David B. Yoffie, Liang Wu, Jodie Sweitzer, Denzil Eden and Karan Ahuja

By early 2018, voice-controlled intelligent assistants had become a major new front in the battle between the giants of the technology sector. "Voice War" focuses on Alphabet’s strategy for Google Assistant, its entrant in the voice assistant space, and asks how the... View Details

Keywords: Alphabet; Amazon; Apple; Strategy; Technology; Intelligent Assistants; Smart Speaker; Voice Assistants; Voice; Platform; Technology Adoption; Digital Platforms; Competitive Strategy; Product Positioning; Technology Industry

15 Feb 2022
Video

Xpress Abs with Siri

03 Feb 2022
Video

Total Body Strength With Siri

26 Nov 2024
Video

Full Body Foam Roll with Siri

February 2019
Teaching Note

Voice War: Hey Google vs. Alexa vs. Siri

By: David B. Yoffie

Teaching Note for "Voice War: Hey Google vs. Alexa vs. Siri," HBS No. 718-519. View Details

Keywords: Technological Innovation; Technology; Technology Industry

March 2017 (Revised February 2018)
Teaching Note

Frank Baker: Siris Capital Group and Titan Systems

By: Steven Rogers and Derrick Collins

Teaching Note for HBS No. 317-036. View Details

17 Oct 2023
Video

30 min Core with Gliders with Siri

June 2022 (Revised July 2022)
Teaching Note

The Voice War Continues: Hey Google vs. Alexa vs. Siri in 2022

By: David B. Yoffie

Teaching Note for HBS Case No. 722-462. View Details

July 2024
Case

The Voice Wars Continues 2024: Hey Google vs. Alexa vs. Siri vs. ChatGPT

By: David B. Yoffie and Sarah von Bargen

May 2022 (Revised July 2022)
Case

The Voice War Continues: Hey Google vs. Alexa vs. Siri in 2022

By: David B. Yoffie and Daniel Fisher

In 2022, after five years of pursuing a new "AI-first" strategy, Google had captured a sizeable share of the American and global markets for voice assistants. Google Assistant was used by hundreds of millions of users around the world, but Amazon retained the largest... View Details

Keywords: Strategy; Artificial Intelligence; Deep Learning; Voice Assistants; Smart Home; Market Share; Globalized Markets and Industries; Competitive Strategy; Digital Platforms; AI and Machine Learning; Technology Industry; United States

February 2018
Case

Amazon, Google, and Apple: Smart Speakers and the Battle for the Connected Home

By: Rajiv Lal and Scott Johnson

Amazon, Google, and Apple all offer their own smart speaker. The devices represent each firm's entry point into the connected home market. All three companies come into the space with their own strengths and weaknesses. Who will win? View Details

February 2022 (Revised February 2024)
Case

Sekisui House and the In-Home Early Detection Platform

By: John D. Macomber and Akiko Kanno

To address an aging population and sales declines, a major Japanese homebuilder considers pivoting to provide and support an in-home health detection platform, in competition with tech companies. This case considers the point of view of major builders regarding how... View Details

Keywords: Voice Assistants; Architecture; Smart Home; Aging Society; Digitalization; Real Estate; Home Automation; Sensors; Strategy; Digital Platforms; Health Care and Treatment; Housing; Age; Real Estate Industry; Construction Industry; Health Industry; Japan