What is a major advantage of implementing infrastructure as code?

Implementing infrastructure as code (IaC) offers significant advantages, particularly in achieving consistent and repeatable infrastructure deployment. This approach allows teams to define their infrastructure through code rather than through manual processes, ensuring that the same configurations can be deployed multiple times without discrepancies. By using version control systems, teams can track changes over time, and because the infrastructure is defined in code, it can be easily replicated across different environments (such as development, testing, and production). This reduces the likelihood of human error and increases overall reliability.

The other options do not present advantages associated with IaC. While enhancing manual configuration accuracy might seem beneficial, IaC fundamentally shifts away from manual configurations altogether. Additionally, IaC typically streamlines processes, which can reduce costs rather than increase them. Lastly, the nature of IaC can decrease the need for higher levels of administrative oversight, as automation can manage configurations effectively without constant human intervention.