Tell me about the development process you followed for Chrome? Some might say certain elements seem like agile...
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How did the team determine which features to include?
When it came to requirements, a lot of the process involved brainstorming meetings with the team and we talked about features. We also had an open mail list internally at Google where people said what would be cool. Then a smaller team went through and generated a living document, a beta roadmap, that said here's a set of features we know we've got to do. It included not only requirements for the browser, but a few things that would make it a compelling beta product. We tried to keep the features very focused and minimal. We're adverse to feature creep. Then we shared the list with the whole team, and people would self-select for what they wanted to work on. Did you set time frames or milestones?
We oriented things around quarters, so the living document was revised each quarter; say this quarter we're focusing on this subset, etc. It was helpful to drive the product forward, and to make sure the product very early on was usable by anybody at Google so we'd have continuous feedback. They were getting a new build every week automatically. In the early days we may have been missing features, but we had a browser users could use, which was essential to success. We had a growing base of internal users, and as it became more feature rich we tried to maintain quality and make sure it was always a stable, usable, dog-foodable product, which was a key element to our methodology. How did the team go about testing Chrome?
We were very focused on automated testing. The engineers write automated tests for all work. We have a variety of frameworks for unit testing; others are testing the whole systems and various things in between. The cool thing was wide-scale testing. We'd take the build and run it against a large number of websites. Automated test was essential to go fast. What does the new browser mean for Web application developers?
We have a security team at Google that's done a lot of work on Chrome. They use a host of scanning tools, bug testers, etc. And Chrome has a sandbox technology to provide an extra layer of protection. It was important that the sandbox was robust, so a lot of [Google] people focused on trying to break out of the sandbox. There is way more to security than protecting against malware, so we tried to do due diligence to exercise the product.
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