consists of ~80 separate github repositories • Built on top of a Web Application Stack (PHP, Apache, Javascript, CSS, HTML) • Over 14000 unit tests and 2200 acceptance ( ui/ api ) tests • Pull request for “core” run 15 hours of test time ( Feedback < 30 mins ) • Every night we run over 180 hours of tests • Various infrastructure components – Relational database (MySQL, MariaDB, PostgreSQL, OracleDB) – Memory Cache (Memcached, Redis) – Storage Providers (FileSystem, NFS, SMB, Swift, S3, OneDrive, Dropbox, etc.) – Identity / Authentication Providers (LDAP, Active Directory, Shibboleth / SAML) – Other Infrastructure Components (ClamAV, Elasticsearch, Collabora, etc.)