I need a clean, reproducible Odoo 19 development and QA environment built from scratch. The operating system is entirely up to you—go with Linux if that is where you are fastest, or Windows 10 if you prefer the Microsoft. Whichever route you choose, the resulting instance must let me switch seamlessly between coding, functional testing and stress-testing without re-installing anything. Here is what will make the job a success: • A fully configured Odoo 19 workspace ready for custom module development, complete with PostgreSQL, Python dependencies and a version-controlled addons folder. • Clear, step-by-step documentation so I can recreate the setup on another machine or cloud host in minutes. • Demonstrable stability: you will walk me through tests that cover (1) the functionality of installed modules, (2) performance under sustained load and peak spikes, and (3) user access and permissions for multiple roles. (3) recommendation for the best working environment deployment (cloud or on premise) • Verification that every core feature, tool, app and third-party module installed is present and working as intended—no hidden errors in the logs. Docker Compose, Ansible, virtualenvs, Nginx reverse proxy or any other tooling you rely on is welcome as long as it is documented. Keep the footprint lean and avoid manual tweaks that cannot be reproduced. The deployment will job will be conducted remotely by the freelancer. We will rely on community edition at the moment. Once the environment passes the joint test session, hand over the configuration files, any custom scripts and the concise README. At that point the milestone is considered complete.