"Decompose by Business Capability" pattern.

The software development and enterprise architecture methodologies employ the strategic strategy known as "Decompose by Business Capability". According to this technique, an organization's activities are divided into discrete capabilities that reflect what the company does or must do to meet its goals. Instead of concentrating on the methods or technologies employed to accomplish the goal, each capacity is designed to address a particular business function or aim. In order to provide more effective IT solutions that are in line with corporate objectives, this aids in comprehending the organization's demands from a business standpoint.

It is a design pattern used in microservice architecture to break down large, complex applications into smaller, independent services. These services are designed around the core functionalities (business capabilities) that deliver value to the business.

Benefits:

• Stable Architecture: aligns with the main business functions; as business capabilities change less frequently than technological elements, this leads to a more stable design.
• Cross-functional Teams: Makes it possible to structure development teams around business characteristics, which promotes improved ownership and cooperation.
• Loose Coupling: Services become more focused and loosely connected, which facilitates easier maintenance and quicker growth.

Identifying Business Capabilities:

• Business Processes: Determine the essential features that add value by analyzing the current business processes.
• Organization Structure: Various teams or departments frequently match certain business competencies.
• Domain Model: Seek for functionalities represented by core domain objects.

Example

To further understand this idea, let's look at a fictitious e-commerce site. The platform's functionalities may be broken down into many essential business competencies:

• Product Management: Takes care of adding new goods, updating product details, and classifying products—everything associated with maintaining the product catalog.

• Order Management: Oversees the processing and delivery of client orders. Returns, payment processing, and order tracking are all included.

• Customer Management: Concentrates on maintaining client data, such as profiles, preferences, and past purchases. Customer assistance is included as well.

• Inventory Management: Ensures that items are accessible for purchase by keeping an eye on stock levels, restocking procedures, and supplier information.

• Marketing and Sales: Covers any activity pertaining to product promotion, such as sales promotions, email marketing, and advertisements.

To visualize the decomposition by business capability, we can create a high-level Component Diagram.

Interaction Between Components

The diagram also illustrates the interactions between these components:

• Product Management and Order Management: Product Management gives Order Management the product information it needs to handle and complete client orders.
• Order Management and Inventory Management: Order Management Information Updates Notifying inventory management of variations in stock levels brought on by client orders and initiating replenishment as required.
• Customer Management and Order Management: Customer Management supplies the customer data required by Order Management to process orders and manage customer service inquiries.
• Marketing and Sales and Product Management: Marketing and Sales promote products managed by Product Management, influencing stock levels and product offerings.
• Inventory Management and Product Management: Inventory Management informs Product Management about stock availability, impacting product listings and sales strategies.

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