Monolithic applications are simple to develop, deploy, and scale as long as they are small in nature.

As the size and complexity of monoliths grow, various disadvantages arise, such as the following:

• Development is slow.
• Large monolithic code bases intimidate new developers.
• The application is difficult to understand and modify.
• Software releases are painful and occur infrequently.
• Overloaded IDE, web container.
• Continuous deployment is difficult – Code Freeze period to deploy.
• Scaling the application can be difficult due to an increase in data volume.
• Scaling development can be difficult.
• Requires long-term commitment to a technology stack.
• Lack of reliability due to difficulty in testing the application thoroughly.

Enterprise application development is coordinated among many smaller teams that can work independently of each other. As an application grows in size, the aforementioned complexities lead to them looking for better approaches, resulting in the adoption of microservices.