The 11th IEEE International Conference on Network Softwarization (IEEE NetSoft 2025) will be held in Budapest, Hungary, from 23 June to 27 June, 2025. Network Softwarization refers to the transition of traditional network infrastructure and functionalities, provided via hardware appliances developed by equipment and service vendors, to new ones that have been propelled over the last 15 years by the maturity of widespread technologies such as network function virtualization, software-defined networking, and service function chaining. In particular, the ability to program, manage, and operate network and service infrastructures more freely makes it possible to reinvent network and cloud architectures, customize services, accelerate service deployment, and facilitate greater operational efficiencies with guarantees.