ITInfrastrukturdokumentation

IT infrastructure refers to the composite set of hardware, software, networks, facilities, and services that support the information technology needs of an organization. It encompasses computing resources such as servers and storage, networking equipment and connectivity, operating systems and virtualization layers, data management tools, security controls, and the physical data center environment. Together, these elements enable the processing, storage, transmission, and management of data and applications across the enterprise.

Core components include compute resources (servers, blades, or cloud instances), storage systems (SAN, NAS, or object storage), networking (switches, routers, firewalls, and load balancers), and software platforms such as operating systems, hypervisors, databases, and management tools. Facilities like power, cooling, and physical security are also essential to maintain availability and reliability.

IT infrastructure supports various architectural models. Traditional on-premises setups are complemented by cloud services, typically categorized as IaaS, PaaS, and SaaS, and by hybrid or multi-cloud deployments. Design goals emphasize reliability, scalability, performance, security, and cost control, with governance and standardization guiding procurement, change management, and compliance with applicable regulations.

Emerging trends include virtualization, containerization, software-defined networking and storage, edge computing, and automation driven by AI for monitoring and operations. Organizations address resilience through backup, disaster recovery planning, and robust cybersecurity. Industry standards and frameworks such as ITIL, ISO/IEC 27001, and TOGAF guide best practices in architecture, service management, risk, and interoperability.