For monitoring the article mentions Pingdom. I have found New Relic's server monitoring [1] to be quite nice as well.<p>The nice thing is how it integrates with other New Relic monitoring for your app and that it actually is free.<p>[1] <a href="http://newrelic.com/server-monitoring" rel="nofollow">http://newrelic.com/server-monitoring</a>
Great article. Super important everyone knows these services. Steve Blank also has a TON of great free resources on his blog: <a href="http://steveblank.com/tools-and-blogs-for-entrepreneurs/" rel="nofollow">http://steveblank.com/tools-and-blogs-for-entrepreneurs/</a>
I like how this post is broken down into specific categories. The most important tools are under "Analyzing and Improving". Obviously I use google analytics but haven't used Visual Website Optimizer. Is it like Optimizely?