Enterprise BI systems need to support high user concurrency, which means there can be lots of queries submitted close to each other. We are pleased to announce that we are working on the query interleaving feature, which allows system configuration to improve the user experience in high-concurrency scenarios.
Query interleaving allows configuration to improve the user experience in high-concurrency scenarios. Multiple queries can run concurrently so fast queries are not blocked behind slow ones. Query interleaving can be set up with short-query bias so if the system is under CPU pressure, short queries are allocated a higher proportion of CPU resources than long-running queries, allowing them to complete faster.
Source: Azure Roadmap