An infrastructure architect work with structuring, documenting and proposing the infrastructure that matches the needs of the organization. An infrastructure architect gets involved in most IT-related projects, but also ongoing operations and improvements. Infrastructure Architecture is a supplier function to a greater extent than other types of architecture.
With infrastructure is meant hardware, networks, technological platforms and system monitoring tools, and more. But it also includes some software that has become the whim standardized or hidden that it will operate as a part of the infrastructure, such as operating system, email server, security, etc.
Infrastructure Architect designs and optimizes IT infrastructure.