Titan is a distributed graph database designed for handling large-scale graphs with billions of edges. It supports both single machine and highly available cluster configurations, making it suitable for various applications ranging from small boutique to massive Big Graph Data applications. The latest version, Titan 0.4.1+, introduces significant improvements in memory management and caching mechanisms, leading to faster traversals and better performance. This update enables seamless scaling of boutique graph applications as they grow into larger-scale applications requiring distributed processing power.