The document discusses challenges developers face such as application performance issues, memory exceptions, and maintaining multiple builds. It describes how .NET features can help address these problems, including using performance counters to measure apps, NGEN to improve startup time, GC methods for memory management, CAS for security, and MSBuild to create a single build for multiple platforms. The presenter advocates using .NET solutions where possible rather than reinventing the wheel and highlights features in .NET 4.0.