Monolithic applications are difficult for multiple teams to work on together. Code changes made by one team are committed to the central code base and can often interfere with other teams working on the same application.
Monolithic applications can struggle with scale if not designed specifically with this in mind. If parts of the application require additional physical resources, the entire monolith must be scaled to accommodate the needs for the single service within the app. Because of these reasons, application architects often break down the monolithic application into pieces so that they can be worked on individually and can scale independently from each other.
The Twelve Factor App is a modern application methodology for building software specifically designed for cloud platforms and is a helpful guide when refactoring. As the monolith is deconstructed into smaller components, consider the following from the 12 Factor App Framework.
