What are the disadvantages of monolithic architecture?

Here are some main disadvantages of monolithic architecture:

• Development and maintenance complexity: As the application grows, the code becomes large and tangled, making it difficult to understand, modify, and debug.
• Scaling difficulty: Scaling a monolith usually requires scaling the entire application, even parts that do not experience high load. This is inefficient and costly.
• Low flexibility in technology choices: You have to use the technologies chosen for the initial development, even if there are more suitable options for new features.
• High failure probability: A failure in one part of the monolith can lead to the failure of the entire application, as components are tightly coupled.
• Long deployment times: Changes in any part of the code require rebuilding and fully deploying the entire monolithic application, which takes a lot of time.
• Complexity of parallel development: Several teams working on different parts of the monolith may face conflicts and difficulties in integrating their changes.