Lakehouse or Warehouse in Microsoft Fabric: Which One Should You Use?

In the world of data analytics, the choice between a data warehouse and a lakehouse can be a critical decision. Both have their strengths and are suited to different types of workloads. Microsoft Fabric, a comprehensive analytics solution, offers both options. This blog post will help you understand the differences between a lakehouse and a warehouse in Microsoft Fabric and guide you in making the right choice for your needs.

What is a Lakehouse in Microsoft Fabric?

A lakehouse in Microsoft Fabric is a data architecture platform for storing, managing, and analyzing structured and unstructured data in a single location. It is a flexible and scalable solution that allows organizations to handle large volumes of data using a variety of tools and frameworks to process and analyze that data. It integrates with other data management and analytics tools to provide a comprehensive solution for data engineering and analytics.

The Lakehouse creates a serving layer by auto-generating an SQL endpoint and a default dataset during creation. This new see-through functionality allows users to work directly on top of the delta tables in the lake to provide a frictionless and performant experience all the way from data ingestion to reporting.

An important distinction between the default warehouse is that it’s a read-only experience and doesn’t support the full T-SQL surface area of a transactional data warehouse. It is important to note that only the tables in Delta format are available in the SQL Endpoint.

Lakehouse vs Warehouse: A Decision Guide

When deciding between a lakehouse and a warehouse in Microsoft Fabric, there are several factors to consider:

  • Data Volume: Both lakehouses and warehouses can handle unlimited data volumes.
  • Type of Data: Lakehouses can handle unstructured, semi-structured, and structured data, while warehouses are best suited to structured data.
  • Developer Persona: Lakehouses are best suited to data engineers and data scientists, while warehouses are more suited to data warehouse developers and SQL engineers.
  • Developer Skill Set: Lakehouses require knowledge of Spark (Scala, PySpark, Spark SQL, R), while warehouses primarily require SQL skills.
  • Data Organization: Lakehouses organize data by folders and files, databases and tables, while warehouses use databases, schemas, and tables.
  • Read Operations: Both lakehouses and warehouses support Spark and T-SQL read operations.
  • Write Operations: Lakehouses use Spark (Scala, PySpark, Spark SQL, R) for write operations, while warehouses use T-SQL.


The choice between a lakehouse and a warehouse in Microsoft Fabric depends on your specific needs and circumstances. If you’re dealing with large volumes of unstructured or semi-structured data and have developers skilled in Spark, a lakehouse may be the best choice. On the other hand, if you’re primarily dealing with structured data and your developers are more comfortable with SQL, a warehouse might be more suitable.

Remember, with the flexibility offered by Fabric, you can implement either lakehouse or data warehouse architectures or combine these two together to get the best of both with simple implementation.

This blogpost was created with help from ChatGPT Pro

Leave a Reply

Fill in your details below or click an icon to log in: Logo

You are commenting using your account. Log Out /  Change )

Facebook photo

You are commenting using your Facebook account. Log Out /  Change )

Connecting to %s