Which of the following technologies must be used in an organization that intends to automate infrastructure deployment?

Infrastructure as a Service (IaaS) provides virtualized computing resources over the internet, but it does not inherently automate deployment processes. While IaaS can host the infrastructure, automation must be implemented through additional tools or frameworks like IaC to achieve true deployment automation.

Inversion of Control (IoC) is a design principle used in software development to enhance modularity and decouple components but is not a technology specifically aimed at infrastructure deployment automation. IoC focuses on the flow of control within programs, rather than on the automation of infrastructure management.

The Internet of Things (IoT) refers to a network of interconnected devices that communicate and exchange data. While IoT can involve automation in data collection and analysis, it does not specifically address the automation of infrastructure deployment processes relevant to managing IT resources.