The Bayerische Staatsbibliothek has just made its 2.5 millionth digital copy available online. Around 70 percent of its copyright-free holdings have thus been made freely accessible on the Internet. Scholars, researchers and the broad public are thus provided with fast and easy access to important treasures of culture and knowledge. For the Bayerische Staatsbibliothek digitization today does not only mean the scanning of its holdings. The development, testing and provision of digital services and products have meanwhile become the core of its activities in the topical field of the "digital library".