The document discusses four common problems encountered when building a DIY big data analytics system: 1) how to collect and store data, 2) how to query data, 3) how different users access query results, and 4) how to scale the system. It introduces Treasure Data as a solution that handles all these problems, allowing users to collect, store, query, access, and scale their data easily without having to manage infrastructure. Treasure Data provides analytics as a service using Hadoop and has tools that support data collection, querying, sharing results between different roles, and automatic scaling as more data and queries are added.