Cisco ACI, which stands for Application Centric Infrastructure, is a software subscription that simplifies, secures, automates, and accelerates your multicloud networking deployment. Learn how to optimize, protect, and scale your network with Cisco ACI and compare the features and integrations of different software subscriptions. Cisco ACI is a software-defined networking (SDN) solution offered by Cisco Systems. It is designed to simplify network provisioning, management, and troubleshooting while providing greater agility and automation for modern data center environments. Cisco ACI is primarily used in data center and cloud environments to improve network flexibility and support the needs of applications.