The Information (paywalled) has published a lengthy report today covering the development of Siri. The article documents Siri's tumultuous changes in leadership and management over the last few years, indicating that Siri 1.0's infrastructure was very creaky, which held back the service
. From a report: One of the most interesting anecdotes is the claim that Apple's HomePod team didn't meet with the Siri group until 2015 (Amazon Echo debuted in late 2014). The story says Apple had originally considered launching the speaker without Siri. The big takeaway from The Information's reporting is that Siri launched with a poorly scalable infrastructure that caused bottlenecks for years after it launched in 2011. At the initial release, the popularity of Siri 'exceeded expectations' and led to a lot of unreliability. The backend was not designed to handle enough users. Apple has spent the intervening years modernising the system apparently.