The basic idea of infrastructure as code is to express platform and service provisioning and configuration as code that can be controlled and managed like any other source.
Benefits for your organisation
Simplicity and speed
Configuration runs like a program, saving time and simplifying how it is applied.
Standardisation
Interpretation tools enforce established standards instead of special practices or original one-off solutions.
Security
System configuration is open to the organisation, reviewable and no longer dependent on one person's knowledge. IaC is both documentation and code; every change is recorded and traceable.
Efficiency and faster development
Deploy infrastructure repeatably and create tailored development, QA and demo environments as a foundation for CI/CD.