What are main differences between Microservices and Monolithic Architecture?

The main differences between Microservices and Monolithic Architecture can be summarized across several key aspects:

Structure

• Monolithic Architecture: This approach involves building an application as a single, indivisible unit. All components, such as the user interface, business logic, and data access layer, are tightly integrated and share the same codebase and runtime environment[1][2][3][4][5].
• Microservices Architecture: In contrast, microservices architecture breaks down an application into a collection of smaller, independently deployable services. Each service is responsible for a specific functionality and communicates with other services through well-defined APIs[1][2][3][4][5].

Development and Deployment

• Monolithic Architecture: Development is simpler initially because all parts of the application are in one place, making it easier to understand and manage. Deployment is also straightforward as the entire application is deployed as a single unit[1][2][3][4][5].
• Microservices Architecture: Development requires more upfront planning and design to identify independent services and define APIs. Deployment is more complex because each microservice is an independently deployable unit, often containerized for platform independence[1][2][3][4][5].

Scalability

• Monolithic Architecture: Scaling a monolithic application can be challenging because it involves scaling the entire application, which can be resource-intensive and inefficient[1][2][3][4][5].
• Microservices Architecture: Microservices can be scaled independently, allowing for more efficient use of resources. This makes it easier to handle increased loads and improve performance[1][2][3][4][5].

Maintenance and Flexibility

• Monolithic Architecture: As the application grows, it can become more complex and difficult to maintain. Changes to one part of the application can impact other parts, making updates and bug fixes more challenging[1][2][3][4][5].
• Microservices Architecture: Each service can be updated, modified, and deployed independently, which simplifies maintenance and increases flexibility. This allows for faster bug fixes and feature updates[1][2][3][4][5].

Fault Tolerance

• Monolithic Architecture: A failure in one part of the application can potent...