Why does the author assume 1 EC2 extra large instance is equivalent to 1 dedicated server and then base the required dedicated servers on the peak required EC2 instances?
He also neglects to weigh in ordinary web hosting with dedicated servers... 131 (based on the alleged equality between vps and dedicated) $300 boxes hosted by someone else with 2x or more cpu, 2x the required bandwidth and all that dedicated disk io for a full $30,000 per month less than AWS, $20,000 per month less than the calculated self hosting (which includes amortized cost of buying the servers), and outsources the physical maintenance of those servers. Not to mention regular old big VPSs at xyzhostingcompany.
After everything it reaches the very predictable ending that AWS is worth it if your requirements are variable.
He also neglects to weigh in ordinary web hosting with dedicated servers... 131 (based on the alleged equality between vps and dedicated) $300 boxes hosted by someone else with 2x or more cpu, 2x the required bandwidth and all that dedicated disk io for a full $30,000 per month less than AWS, $20,000 per month less than the calculated self hosting (which includes amortized cost of buying the servers), and outsources the physical maintenance of those servers. Not to mention regular old big VPSs at xyzhostingcompany.
After everything it reaches the very predictable ending that AWS is worth it if your requirements are variable.