Meaning of defence in depth | Babel Free

Definitions

1. A strategy that seeks to delay rather than prevent the advance of an attacker, potentially yielding a limited amount of territory in order to stress the attacker's logistics and reduce their momentum.
   countable, uncountable
2. The use of multilayered protection to make a system reliable even if part of the protection fails.
   countable, uncountable

CEFR level