I've run a sporadically popular (100s of thousands of uniques on some days) blog on Wordpress for years. All running on a single spot instance (if it was killed

I've run a sporadically popular (100s of thousands of uniques on some days) blog on Wordpress for years. All running on a single spot instance (if it was killed I have a script to roll over in minutes). The database, Wordpress, the file storage. Entirely self contained. I occasionally persist the AMI so I can spin up a new updated system base, and have regular backups of the files and database. My monthly cost is ~$9 on AWS. I've had literally minutes of downtime over the past several years. Obviously this guide is geared to a more serious installation, but there is the danger that the more reliable a system becomes, often the less reliable it becomes. EFS and NLB configuration changes or problems taking the system offline, for instance.