A lot of this (eg especially the in house stuff) comes from Google starting over a decade before twitter.
OSS just wasn’t as good then
A lot of OSS now is from folks that had experience at google or were aware of what was going on there — or who built things so that they could make things like the best folks (at the time). Some OSS is even from Google of course (eg k8s, chrome dev tools, etc.).
Landscape is of course very different now.
Google is slowly moving towards more OSS and external vendors as stuff gets better
Comments
A lot of this (eg especially the in house stuff) comes from Google starting over a decade before twitter.
OSS just wasn’t as good then
A lot of OSS now is from folks that had experience at google or were aware of what was going on there — or who built things so that they could make things like the best folks (at the time). Some OSS is even from Google of course (eg k8s, chrome dev tools, etc.).
Landscape is of course very different now.
Google is slowly moving towards more OSS and external vendors as stuff gets better
Also google has +27k software engineers.