What is Monolith?

A monolith, in software engineering, refers to a single-tiered software application in which the user interface and data access code are combined into a single program from a single platform. It is a traditional architectural approach where all functionalities of an application are tightly coupled and deployed as a single unit. Monolithic applications are often contrasted with microservices, which are smaller, independent, and loosely coupled services that work together. While simpler to initially develop and deploy, monoliths can become increasingly complex and difficult to scale, maintain, and update over time.