Software-defined infrastructure (SDI) are one of the most popular and ongoing trends within data centers and cloud environments leading to better infrastructure flexibility by developing the infrastructure based on scripts respectively source code. However, SDIs are more and more becoming just a means to an end since automation, sophisticated algorithms and thus intelligent systems are leading to an artificial intelligence-defined infrastructure (AI-defined infrastructure, or ADI).\nSDI is not dead but only a means to an end\nA SDI abstracts the software from the hardware layer. Thus, the intelligence is not implemented into the hardware components anymore and has been moved into a software stack. Based on software and a high degree of automation a SDI is designed to build and control an infrastructure mostly without human interaction.\nTypical SDI environments, e.g. cloud infrastructure, are built by developing scripts or source code. The software includes all the necessary commands to configure an entire infrastructure environment, including the applications and services running on top. A SDI-based infrastructure works independent from a certain hardware environment. Thus, a complete infrastructure can be exchanged by software \u2013 regardless of the underlying hardware components. One reason why SDIs are the fundamental foundation of today\u2019s cloud infrastructure environments.\nHowever, a SDI is everything but intelligent! It is based on static source code including hard coded commands for taking certain actions automatically.\nThis is an AI-defined infrastructure (ADI)\nA software-defined infrastructure is an important concept for building and running dynamic IT environments. However, a SDI is limited to the static source code as well as the skill set of the responsible developer respectively administrator who is writing the scripts\/ code for the environment. Furthermore, a SDI is only dynamic to a certain level since it is not able to understand or learn the own environment it is operating.\nADI\u00a0enhances a SDI with the necessary sophisticated algorithms, machine learning and artificial intelligence \u2013 fueling the SDI with intelligence. An ADI allows a SDI to build and run self-learning respectively self-healing infrastructure environments. Thus, without human interaction AI-defined IT infrastructure environments are capable of:\n\ndeploying the necessary resources depending on the workload requirements as well as de-allocating the resources when they are not needed anymore.\nconstantly analyzing the ever-changing behavior and status of every single infrastructure component and thus understanding itself.\nreacting or proactively acting based on the status of single infrastructure components by autonomously taking actions and thus leading the entire infrastructure into an error-free status.\n\nAn AI-defined infrastructure cannot be compared with classic automation software, which typically works with predefined scripts. An ADI utilizes a company\u2019s existing knowledge executing it automatically and independently. However, like every new born organism an ADI needs to be trained but afterwards can work autonomously. Thus, based on the learned knowledge, disturbances can be solved \u2013 even proactively for not expected events by connecting appropriate incidents from the past. Therefore, an ADI monitors and analyzes all responding components in real-time to identify and solve a problem based on its existing knowledge. The more incidents are solved the bigger the infrastructure knowledge gets. The core of an ADI is a knowledge-based architecture that can analyze incidents and changes and autonomously develop strategies to solve an issue.\n\u00a0Furthermore, an\u00a0AI-defined infrastructure embraces communities to:\n\nconsume the knowledge from external experts to become more intelligent.\nconnect with other ADI environments to link, combine and share their knowledge base.\nconstantly expand the knowledge pool.\noptimize the knowledge.\n\nAll in all, an ADI is an intelligent system that \u2013 initially fueled with external knowledge \u2013 can learn and make decisions autonomously without human interaction.\nADI is only a single piece of the entire AI-defined enterprise stack\nAn ADI is an essential part of today\u2019s IT operations building the foundation for the AI-enabled enterprise. However, first and foremost it enables IT departments changing the infrastructure behavior from a today\u2019s semi-dynamic to a true real-time IT environment.\nThis autonomous way of planning, building, running and maintaining the entire infrastructure let IT operations and developers deploy IT resources like server, storage, network, databases and other ready services in the most efficient way \u2013 by using the knowledge of more than just one expert but the entire IT operations team. Furthermore, IT operations are being transformed from pure consumers of resources to orchestrators respectively managers of a completely automated and intelligent IT stack. The very foundation of an end-to-end AI-ready enterprise.