Definition
A monolith, or monolithic architecture, is a traditional software design approach where an entire application is built as a single, indivisible unit. All functionalities, from user interface to business logic and data access, are tightly coupled and run as a single process. This unified structure simplifies initial development and deployment because all components are deployed together. Understanding monoliths is crucial for IT professionals as they represent a foundational architecture from which modern systems often evolve. For instance, a classic desktop application like Microsoft Word is a prime example of monolithic software. It differs significantly from microservices, which break down an application into small, independent, and loosely coupled services. Knowledge of monolithic architecture is relevant for certifications like CompTIA Security+ and cloud security exams.