Domain-Specific Modeling (DSM) provides a modern solution to demands for higher productivity by constricting the gap between problem and solution modeling. In the past, productivity gains have been sought from new programming languages. Domain-specific modeling languages provide a viable solution for continuing to raise the level of abstraction beyond coding, making development faster and easier. In DSM, the models are constructed using concepts that represent things in the application domain, not concepts of a given programming language. The modeling language follows the domain abstractions and semantics, allowing developers to perceive themselves as working directly with domain concepts. The models represent simultaneously the design, implementation and documentation of the system. In a number of cases, the final products can be automatically generated from these high-level specifications with domain-specific code generators. This automation is possible because of domain-specificity: both the modeling language and code generators fit to the requirements of a narrowly defined domain, usually inside one organization only.