Do you use tabs or spaces for code indentation?

About two years ago, a significant event happened at Stack Overflow: a new system, named Providence, was released. Providence would allow us to tell which technologies a visitor is interested in, and measure the “fitness” between a visitor and a job. The release of Providence marked a stepping stone in Stack Overflow’s continuous effort to be “smarter” and invest in data science, and it was only the beginning.

This morning, a popular Stack Overflow question hit a major milestone:

As of today, Stack Overflow now deploys HTTPS by default on StackOverflow.com — as well as the hundreds of Q&A communities that make up our Stack Exchange network. We now redirect all traffic to https://, and Google links will change over the next few weeks.

In honor of Google I/O 2017 and the launch of the official Stack Overflow mobile app, we on the Stack Overflow Insights team are sharing a look at the fast-paced history of mobile application development.