TechTarget | June 9
Before the cloud era, only a few organizations -- generally the biggest and best-funded -- could afford to have a second data center for business continuity or disaster recovery. The costs of hardware, space and personnel were too prohibitive for others.
With the cloud, however, adding capacity is relatively easy and dramatically less expensive. With multiple cloud locations and AWS availability zones, enterprises have the ability to build applications that can be more scalable and available than tradition on-premises apps. However, turning AWS redundancy into a fully functioning secondary off-site data center is not necessarily easy.