Maximizing Efficiency: Integrating Domain-Driven Design (DDD) with Hexagonal Architecture

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Domain-Driven Design (DDD) is a software development approach that focuses on understanding and modeling the business domain to effectively solve complex problems. According to Eric Evans, author of "Domain-Driven Design: Tackling Complexity in the Heart of Software," the domain refers to the area of ​​knowledge, influence, or activity in which a software product is developed.

In simpler terms, as Vaughn Vernon explains in his book "Implementing Domain-Driven Design," the domain is what an organization does and how it does it. Each company acquires its own unique set of knowledge and practices to test its operations, which constitutes its domain. In short, Domain-Driven Design is about deeply understanding the business and effectively composing it into code to create solutions that are strictly aligned with the company's needs and goals.

According to Eric Evans, a model is a system of abstractions that describes selected aspects of a domain and can be used to solve problems related to that domain. The domain is further divided into different viber data parts called subdomains, each containing one or more models.

These subdomains are divided as follows:

1. Core Domain or Main Domain (Core Domain)
It is the most significant part that makes it become a key asset for the organization. Here reside the most relevant and technical concepts that distinguish the company from its adversaries. It is given the greatest preference and requires significant effort, concentrating the best talent of the organization.

2. Support subdomains
These subdomains reveal aspects of the business that are important, but less critical than the main domain. Although they are essential to the overall functioning of the organization, they do not have the same level of complexity or specialization as the core domain.

3. Generic Subdomain
This subdomain does not express specific aspects of the organization's domain model. Here, the use of standards and generic solutions, such as ERP (Enterprise Resource Planning) or CRM (Customer Relationship Management) systems, is permitted to reduce complexity and associated costs.

In summary, this subdomain structure allows for a clearer and more effective organization of knowledge and responsibilities within a Domain Driven Design-based software development project, which can bring significant value to large organizations by providing a solid framework for understanding and modeling the business domain, improving communication and collaboration, managing complexity, and maintaining flexibility and adaptability over time.