EDAS is implemented in the LAMP (Linux-Apache-MySQL-PHP) model.
EDAS runs on a set of Linux servers distributed across two commercial hosting centers, one in Dallas, Texas, the other in San Diego, California. Both data centers have multiple redundant network connections and back-up power.
PDF manuscripts are copied to three different servers.
All database operations are replicated in real time across two database servers. In addition, a nightly snapshot of the database is stored on a third server used only for backups.