This whitepaper is for historical reference only. Some content might be outdated and some links might not be available.

# Considerations
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 This discussion starts with a single web server deployment. There may be occasions when you outgrow it, for example: 
+  The virtual machine that your WordPress website is deployed on is a single point of failure. A problem with this instance causes a loss of service for your website. 
+  Scaling resources to improve performance can only be achieved by “vertical scaling;” that is, by increasing the size of the virtual machine running your WordPress website.