User self-service is a cloud computing feature that allows users to provision, manage, and terminate cloud resources on demand, without the need for human intervention or approval. User self-service enables users to access cloud services through an online control panel, a web portal, or an API. User self-service can improve the agility, efficiency, and scalability of cloud computing, as users can quickly and easily obtain the resources they need, when they need them, and pay only for what they use. User self-service can also reduce the workload and costs of the cloud service provider, as they do not have to manually process requests or allocate resources.
In this scenario, a developer is leveraging a public cloud service provider to provision servers using the templates created by the company's cloud engineer. This means that the developer can access the cloud provider's web portal or API, select the desired template, and launch the server instance without waiting for approval or assistance from the cloud provider or the cloud engineer. This is an example of user self-service, as the developer can self-manage the cloud resources according to their needs.
Reference:
1: What is On-Demand Self Service? - Definition from Techopedia
2: What is Self-Service Provisioning in Cloud? | CloudBolt Software
CompTIA Cloud Essentials+ Certification Study Guide, Second Edition (Exam CLO-002), Chapter 2: The Business Side of Cloud Computing, Section 2.1: Cloud Service Models3