Recently I got involved in a big project where we had a single solution with approximately 100 projects. Why 100 Projects in a Solution? The reason for a 100 projects solution is that like in many modular systems these days, we have the following three tiers: A few core / common projects every project will use. A large amount of modules, independent of each other. This tier directly depends on tier 1. A few end-projects which loads the different modules. This tier indirectly depends on tier 2. So...