API programming versus Monolithic App programming

David Garcia
2 min readDec 29, 2022

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Cover — Microservices @ devopedia.org

An Application Programming Interface (API) is a set of guidelines, protocols, and tools for building software applications. It specifies how software components should interact with each other and provides a way for different software systems to communicate and exchange data.

On the other hand, a monolithic application is a single, self-contained software application that consists of a large codebase that performs many different functions. It typically includes a user interface, a database, and a server-side application, and all of these components are tightly coupled and built as a single unit.

There are several key differences between APIs and monolithic applications:

  1. Architecture: APIs are designed to be modular and reusable, allowing different software systems to communicate with each other through a set of well-defined interfaces. Thus, it is common to use APIs when working with microservices. Monolithic applications, on the other hand, are built as a single unit, with all of the different components tightly coupled together.
  2. Scalability: APIs can be scaled up or down as needed because they are modular and reusable. Monolithic applications, on the other hand, can be more difficult to scale because all of the different components are tightly coupled together.
  3. Maintenance and updates: APIs are designed to be updated and maintained independently, allowing different software systems to continue functioning even if one of the components is updated or changed. Monolithic applications, on the other hand, may require more extensive testing and deployment processes when updates are made, as changes to one part of the application may affect the entire system.
  4. Flexibility: APIs are flexible by definition and can be used to integrate different software systems, allowing developers to build applications that can communicate with a wide range of other systems. Monolithic applications, on the other hand, are less flexible and may be more challenging to integrate with other systems.

Overall, APIs are designed to be modular and reusable, allowing different software systems to communicate with each other through a set of well-defined interfaces. Monolithic applications, on the other hand, are single, self-contained software applications that consist of a large codebase that performs many different functions.

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David Garcia
David Garcia

Written by David Garcia

Senior Software Engineer, Backend, NodeJS & Symfony developer, workaholic, passionate for new technologies and OSS contributor. https://linktr.ee/davidgarciacat

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