Stakeholders, in a business and product/system development environment, individuals or groups that have a vested interest in the success of a project, product, system or organization. They can include customers, employees, investors, suppliers, regulators, and any other individual or group that can affect or be affected by the outcome of a project around a product, system or organisation.

When it comes to business analysis and data/conceptual modeling, stakeholders are involved and need to be serviced in several areas, including:

1. Communication: Effective communication is key to ensuring that all stakeholders are on the same page and working towards a shared goal. This includes ensuring that stakeholders have access to the information they need, that messages are delivered clearly and concisely, and that any concerns or issues are addressed promptly.
   
   
2. Understanding of the business and product/system: Stakeholders need a thorough understanding of the business and the product/system being developed, including the underlying processes, goals, and objectives. This will enable them to provide informed input and make decisions that align with the overall vision and strategy.
   
   
3. Data Strategy: Stakeholders play a critical role in overseeing data strategy as they have a vested interest in ensuring that data is managed effectively to support the organization's goals and objectives.
   
   
4. Requirements gathering: Gathering and documenting requirements is a critical aspect of business analysis and modeling. Stakeholders need to be involved in this process to ensure that all relevant information is captured and that the requirements accurately reflect their needs and expectations.
   
   
5. Data modeling: Data modeling involves creating a conceptual representation of data, which serves as a blueprint for the database design. Stakeholders need to be involved in this process to ensure that the data model accurately reflects their needs and requirements, and that it is aligned with the overall business strategy.
   
   
6. Conceptual modeling: Conceptual modeling involves creating a visual representation of the system or product being developed, including its functions, processes, and interactions. Stakeholders need to be involved in this process to ensure that the conceptual model accurately reflects their needs and requirements, and that it is aligned with the overall business strategy.
   
   
7. Testing and validation: Stakeholders need to be involved in testing and validation to ensure that the final product/system meets their needs and expectations, and that it is free from defects and errors.

Stakeholders are actively involved or impacted by the business analysis and modeling process and require that the final product/system meets their needs and expectations, and that it aligns with the overall business strategy. Effective communication, a thorough understanding of the business and product/system, and active participation in requirements gathering, data modeling, conceptual modeling, and testing and validation are key to successfully servicing the needs of stakeholders.