Introduction:
In the context of electronic transactions, parties involved in the transactions can come from within a given business firm. This type of electronic commerce is known as intra-B commerce.

Explanation:
Intra-B Commerce:
Intra-B commerce refers to electronic transactions that take place within a single business firm. It involves the exchange of goods, services, or information between different departments, divisions, or subsidiaries of the same organization.

Parties Involved:
The parties involved in intra-B commerce are from within the same business firm. These parties can include:

1. Employees: Employees from different departments or divisions of the organization participate in electronic transactions. They may engage in activities such as ordering supplies, requesting services, or sharing information.

2. Managers: Managers at various levels within the organization may be involved in approving transactions, authorizing payments, or overseeing the electronic commerce activities within the firm.

3. Suppliers: Intra-B commerce may also involve suppliers who provide goods or services to the business firm. These suppliers may have integrated their systems with the firm's electronic commerce platform to streamline the ordering and delivery process.

4. Customers: In some cases, intra-B commerce may also involve customers who are part of the firm's business ecosystem. For example, a business firm may have a dedicated electronic platform for its clients to place orders or access specific services.

Examples of Intra-B Commerce:
Intra-B commerce can take various forms within a business firm. Some examples include:

1. Internal Procurement: The procurement department of a firm may use an electronic platform to order supplies or services from other departments or divisions within the organization.

2. Interdepartmental Collaboration: Different departments within a firm may engage in electronic collaboration to share information, documents, or data. This can enhance communication and improve efficiency within the organization.

3. Supplier Integration: A firm may integrate its electronic commerce system with those of its suppliers. This allows for seamless ordering, invoicing, and delivery processes, ensuring timely procurement of goods and services.

Conclusion:
Intra-B commerce involves electronic transactions that occur within a single business firm. It enables efficient collaboration, procurement, and communication between different departments, divisions, and subsidiaries within the organization. By leveraging technology and electronic platforms, intra-B commerce streamlines business processes and enhances overall efficiency within the firm.