What exactly is an Enterprise Application Architecture?

• Enterprise Application Architecture is a structured blueprint that defines the components, layers, standards, and interactions needed to design, build, and scale large, complex software systems.

• In architecture, we can discuss about 02 main types
  1. Software architecture is the overall design blueprint for any software system (defining its layers, components, and how they interact).
  2. Application architecture is the specific architectural style or pattern (e.g. microservices, layered, event-driven) you choose when building a particular application.
• To make your software robust and maintainable you should attempt for,
  • Loose coupling (minimize dependencies between components)
  • High cohesion (keep related functionality grouped together)

Evolution of Enterprise App Architectures

• Below are the widely used architectures we can found enterprise-level

  1. Monolithic Architecture

     • All features and modules are built into one single, tightly connected application.

  2. N-Tier Architecture (Ex:- Layered Architecture)

     • Application is divided into separate layers like UI, logic, and database to improve organization.

  3. Service-Oriented Architecture (SOA)

     • Different applications communicate through services using a central message system like ESB (Enterprise Service Bus).

       

  4. Microservices Architecture

     • Application is broken into small, independent services that can be developed and deployed separately.

  5. Event-Driven Architecture (EDA)

     • Components react to events and messages, allowing for real-time, asynchronous processing.

       

  6. Cloud-Native Architecture

     • Applications are built to run and scale efficiently in cloud environments using modern cloud services.

Responsibility of the Architect

• Combine knowledge and experience of enterprise architectures to design the best-fit solution.

• Understand software requirements and choose suitable architecture styles.

• Create a compound architecture that fits technical and business needs.

• Ensure the system is scalable, maintainable, and aligned with project goals.

  

Monolithic vs Microservices

Monolithic Application

A monolithic application is a single, unified codebase where all components are tightly coupled and run as one service.