A durable medium allows customers to store information personally addressed to them in a way that is accessible for future reference. Further reading Guidance on Durable Medium (FCA) Definition of Durable Medium (FCA Handbook) The FCA issue guidance on the outdated definition of ‘durable medium’ (Lexology); June 2017

Dynamic Application Security Testing (DAST) is a security testing method that analyses a running application from the outside to identify vulnerabilities by simulating real-world attacks.

Elasticity in the cloud refers to the ability to dynamically scale computing resources up or down in response to demand, optimising both performance and cost.