Building an online marketplace that incorporates pre-built business intelligence (BI) dashboards can pose several challenges. Here are some potential hurdles you might encounter:

1. Data Integration: Integrating various data sources into the marketplace and connecting them to the BI dashboards can be complex. You'll need to develop data connectors or APIs to pull data from different systems, ensuring compatibility and data quality.

2. Dashboard Customization: Pre-built BI dashboards might not fulfill the specific requirements of all marketplace users. Building a solution that allows customization and flexibility in the dashboard layout, metrics, and visualizations can be challenging while maintaining ease of use.

3. Scalability: As your marketplace grows and accommodates more users and data, scaling the infrastructure to handle increasing data volumes and concurrent users becomes crucial. Ensuring the dashboards remain responsive and performant, even with large datasets, can be a challenge.

4. Data Security and Privacy: When dealing with sensitive data, such as user information or transaction details, maintaining data security and privacy is paramount. Implementing robust security measures, data encryption, access controls, and compliance with relevant regulations (e.g., GDPR or CCPA) requires careful planning and execution.

5. User Training and Adoption: Introducing a new BI dashboard to marketplace users might require training and support to ensure proper adoption. Users should be able to understand and navigate the dashboards effectively. Designing an intuitive user interface and providing comprehensive documentation or training materials can help overcome this challenge.

6. Data Quality and Consistency: Pre-built BI dashboards rely on accurate and consistent data. Ensuring data quality, such as removing duplicates, handling missing values, and maintaining data integrity across different data sources, can be a complex task. Implementing data validation checks and data cleansing processes is necessary to provide reliable insights.

7. Continuous Updates and Maintenance: As the marketplace evolves, the underlying data sources, metrics, or business logic might change. Ensuring the pre-built BI dashboards remain up to date requires ongoing maintenance and updates. Coordinating updates, bug fixes, and new feature releases can be challenging while minimizing disruptions to the marketplace operations.

8. Performance Optimization: Depending on the complexity of the dashboards and the amount of data being processed, achieving optimal performance can be a challenge. You may need to fine-tune queries, optimize database schemas, or leverage caching mechanisms to improve response times and ensure a smooth user experience.

These challenges highlight the technical, operational, and user-oriented aspects of building an online marketplace with pre-built BI dashboards. Careful planning, experienced development teams, and a focus on user feedback can help overcome these hurdles and deliver a successful marketplace solution.