Pressing It

That architecture is aimed at a WordPress site that serves millions of users and requires four or five nines. Itโ€™s reasonable in that context and close to what Iโ€™d build.

If you wanted to launch a small-scale WordPress site fairly easily, hereโ€™s what youโ€™d do. Thatโ€™d cost $10-$15 a month wheras the other one would probably be at last $2,000 (havenโ€™t priced it out) and potentially a lot more depending on autoscaling.

For an architecture thatโ€™d do just fine in almost all cases, hereโ€™s what youโ€™d do. Thatโ€™d work for 99% of enterprise clients.

Thereโ€™s just an enormous difference between infrastructure designed for four or five nines that serves millions of users and a WordPress site that sees hundreds of visitors a day.