Hello Gnana Sai krishna
Welcome to Microsoft Q&A Platform, thanks for posting your query here.
Both these offerings are different.
Microsoft Fabric and Azure Service Fabric are two different products. Microsoft Fabric is a unified platform for data engineering, data warehousing, and business intelligence.
On the other hand, Azure Service Fabric is a cloud-based platform that provides a complete set of tools and services for building, deploying, and managing scalable and reliable microservices-based applications.
Ref:
https://www.microsoft.com/en-us/microsoft-fabric
https://learn.microsoft.com/en-us/fabric/
https://azure.microsoft.com/en-in/products/service-fabric
https://learn.microsoft.com/en-us/azure/service-fabric/
Hope this clarifies.
If the suggested response helped you resolve your issue, please 'Accept as answer', so that it can help others in the community looking for help on similar topics.