OpenStack is a free and open-source software platform for cloud computing, mostly deployed as infrastructure-as-a-service (IaaS), whereby virtual servers and other resources are made available to customers.
License: Open Source
OpenStack is an open-source cloud computing platform that offers flexibility and customization but requires significant technical expertise to manage. In contrast, Amazon Elastic Compute Cloud is a fully managed service that simplifies deployment and scaling but can lead to vendor lock-in and increased costs.