Which technology is an open-source infrastructure automation tool that automates repetitive tasks for users who work in networks such as cloud provisioning and intraservice orchestration?

Ansible is an open-source tool maintained by Red Hat that automates repetitive IT tasks - including cloud provisioning, configuration management, and service orchestration - using agentless SSH connections and declarative YAML playbooks, matching every element of the question description.

Contrail (Juniper Networks) is an SDN and NFV platform focused on network virtualization and policy enforcement, not a general-purpose infrastructure automation tool for repetitive tasks.

Java is an object-oriented programming language used to build applications; it is not an infrastructure automation tool.

Jinja2 is a Python templating engine used to render dynamic text content; it is a component used inside Ansible playbooks but is not itself an automation platform.