The document discusses building an open data platform using 100% open source tools. It recommends using CKAN as the core open data portal platform combined with Wordpress and the WPCKAN plugin to interface Wordpress sites with CKAN datasets. It also recommends tools for automated provisioning and deployment (Ansible, Puppet), collaborative development (Github, Travis CI, Jenkins), and translation (Transifex). The goal is to share lessons learned on building a reusable, collaborative and sustainable open data platform using open source components and processes.