When it comes to hosting for your startup website, you do not want to choose a low quality host with sub-standard hardware and support. For example, Godaddy and Hostgator Shared website hosting packages may have 1000+ websites along with your website. So, instead, you go for a VPS, but with the same Godaddy, Hostgator, Bluehost hosts, you find out that when you get serious traffic, the load times increase dramatically, or they shut you down for too much cpu/ram usage. If you look at the server CPU's in a Hostgator VPS, you are likely to see something like AMD processors. This website, KickinKnowledge.com, in comparison, is hosted on a Liquidweb VPS, which has Intel Xeon processors. As we all know, Intel processors have consistently proven to have better overall performance.
In addition, not all hosts are taking advantage of the latest in hard drive technology, solid state drives. Solid state drives, or "SSD", are significantly faster when accessing the files that make your website run. Liquidweb has SSD servers, and many of the more popular hosts do not even offer the option yet.
If you already have a hosting service for your startup, you can test the performance of your startup website using LoadImpact.com - This awesome website tests your website speed with 50 users incrementally accessing your website pages.
Here's a screenshot of this website's performance, with one spike of almost 1.25 second's. Most of the time, it is under 800 millisecond's for all the way to 50 users. I can now have some confidence that my website will be able to handle a good amount of traffic and visitors moving around my website. If you have a spike from reddit, facebook, or a large blog like Mashable, then you better have a good server like my VPS, and also caching configured properly (with WordPress use W3 Total Cache or Supercache) If you have any questions about your startup website performance or hosting setup, feel free to contact Kickin Knowledge for a free consultation. Full disclosure, we are a compensated affiliate of Liquidweb, and we recommend joining their Affiliate program, the rates aren't the highest in the industry, but their support allows myself and others to recommend them to friends, family, and clients without worrying about any negative feedback on the referral.