Step 5: Add Customer Sink

External Entities

External entities represent systems or actors that are distinct from your SOI but interact with it in important ways that are relevant for the purposes of analysis.

Examples include:

• People (customers, users, operators)

• Organizations (suppliers, regulators)

• Other systems (external infrastructure, natural environment)

Key characteristics:

• Exist outside your system boundary

• Exchange materials, energy, or information with your system

• Have their own internal workings (which you may choose not to model)

We'll start by creating a customer sink an environmental identity that receives and makes use of your system's core product.

Click the green sink button

Click the newly created sink entity

Add element details