1. Licensing and Cost: Microsoft SQL Server Reporting Services comes as part of the SQL Server suite, which requires licensing fees based on the edition and number of cores. On the other hand, Sigma Computing is a cloud-based platform that typically operates on a subscription model, making it more cost-effective for organizations looking for a flexible pricing structure.

2. Data Source Connectivity: Microsoft SQL Server Reporting Services is primarily designed to work with SQL Server databases, although it can connect to other data sources with some configuration. In contrast, Sigma Computing offers seamless connectivity to a wide range of data sources, including cloud-based platforms like Google BigQuery, Snowflake, and Amazon Redshift, without the need for additional setup or configurations.

3. User Interface and Accessibility: Microsoft SQL Server Reporting Services is more suited for users with a background in SQL and database management, as it requires manual coding for report creation and customization. Sigma Computing, on the other hand, provides a user-friendly interface with drag-and-drop functionalities, allowing users of all levels to easily create and visualize complex data models and reports without any coding knowledge.

4. Collaboration and Sharing Capabilities: Microsoft SQL Server Reporting Services lacks robust collaboration features, making it challenging for teams to collaborate on reports in real-time. On the contrary, Sigma Computing offers collaborative functionalities that enable multiple users to work on the same report simultaneously, share insights, and comment on findings, fostering a more efficient and collaborative data analysis environment.

5. Scale and Performance: Microsoft SQL Server Reporting Services is limited by the capacity of the on-premise server and may face performance issues as the volume of data and users increases. In comparison, Sigma Computing leverages the power of the cloud for scalable computing, ensuring high performance even with large datasets and concurrent users, making it a more suitable option for organizations with growing data needs.

6. Natural Language Processing: Sigma Computing incorporates natural language processing (NLP) capabilities, allowing users to query data in plain English, making it easier for non-technical users to analyze and derive insights from complex datasets. Microsoft SQL Server Reporting Services does not offer built-in NLP features, requiring users to write SQL queries or use predefined reporting templates to access data.

In Summary, Microsoft SQL Server Reporting Services and Sigma Computing differ in terms of licensing and cost, data source connectivity, user interface, collaboration features, scalability, and natural language processing capabilities.