Hosting Drupal sites is, after all, what they do. Going into this, I expect that Pantheon will perform better than our previous setup, though I don't really have a sense of how much better. So I wanted to answer this question: How did moving our site from Linode to Pantheon affect the performance-measured in response time-of our site for both members and non-members? Because if you go in saying, "to see what happens", that's what you'll do. They say that if you're going to measure something you should know what questions you want to answer before you start. The choice to move to Pantheon wasn't because we hoped for a performance improvement, but still, we thought it would be a fun exercise to see how the change affected the performance of our site. Our old Linode infrastructure consisted of a single web server running Varnish, Solr, Memcache, and Apache, along with a few other servers for testing and DevOps. Prior to moving our site to Pantheon it was hosted on Linode, using a couple of different VPS servers that we managed ourselves with a bit of help from Lullabot. This month I'm going to take a look at some performance comparisons between our previous infrastructure and our shiny new home. Last month we completed the migration and Blake wrote a post about the process. Back in August we announced that we were moving our site to Pantheon hosting.