What the hell is this? A spell or what?? Actually, this seems a 'remark not uncommon' for the people in IT industry. The point is, they are simply calling computers which are;
- far side from human as 'Backend'
- near side to human as 'Frontend'
To be more specific, a mechanism (computer) which corresponds User Management, Database Management, File Management, etc. is called Backend, whereas PC applications or mobile applications are called Frontend. Recently, there exist terms of 'Backend as a Service' or 'mobile Backend as a Service', and focusing on 'Frontend development' for more convenience is becoming the trend.
However...
Here in this world where Information Communication has well evolved, humans are always on the network also. A mechanism of Backend is not always must be composed only with computers. Business process management (BPMS) is the back-end systems, including humans. (It would not be called a 'Cloud computing' anymore, though...)
For example, humans may be interposed in a 'Billing system'. Rather, it could be better for the improvement of deliverable's quality by human interposition... So, I tried to think about a Backend, which is 'Postal matter Shipping Request system'. In this Workflow, although the cover sheet will be automatically generated, enclosing and posting will be done by humans.
Hum, if adding APIs more to it, the more automated 'Backend-system' it might become...
[Postal Matter Sending system]