Thanks for the question and using MS Q&A platform.
Currently, you can use Azure Free Trial subscription to create a Single node cluster which will have one Driver node with 4 cores.
A Single Node cluster is a cluster consisting of a Spark driver and no Spark workers. Such clusters support Spark jobs and all Spark data sources, including Delta Lake. In contrast, Standard clusters require at least one Spark worker to run Spark jobs.
Single Node clusters are helpful in the following situations:
- Running single node machine learning workloads that need Spark to load and save data
- Lightweight exploratory data analysis (EDA)
Reference: Azure Databricks - Single Node clusters
Hope this helps. Do let us know if you any further queries.