DP-300 Plan and implement data platform resources Practice Question
You are deploying Azure SQL Database for a multi-tenant SaaS application. Each tenant has its own database, and you need to ensure that resource usage is isolated and predictable. You also need to manage performance at the tenant level. Which Azure SQL Database offering should you choose?
⚠ Common exam trap
A common mix-up: candidates confuse elastic pools with serverless or single databases, thinking that serverless provides isolation or that single databases are the only way to guarantee performance, but they miss the key requirement for per-tenant resource control and cost efficiency that elastic pools uniquely offer.
Answer choices
Why each option matters
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
✓
Azure SQL Database elastic pools with per-database min/max DTU or vCore settings.
Azure SQL Database elastic pools with per-database min/max DTU or vCore settings are the correct choice because they provide resource isolation and predictable performance at the tenant level. Elastic pools allow you to allocate a shared pool of resources across multiple databases while setting per-database minimum and maximum limits, ensuring that no single tenant can consume excessive resources and that each tenant gets a guaranteed baseline. This directly addresses the multi-tenant SaaS requirement for isolated and predictable resource usage.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✓
Azure SQL Database elastic pools with per-database min/max DTU or vCore settings.
Why this is correct
Elastic pools share resources across tenant databases while per-database min/max DTU or vCore settings guarantee each tenant a reserved floor and a capped ceiling, delivering the isolation and predictability the stem demands. Performance tuning then happens at tenant level, satisfying the manageability constraint.
- ✗
Azure SQL Database serverless compute tier.
Why it's wrong here
Serverless auto-scales and auto-pauses per database, so compute allocation fluctuates with workload rather than remaining predictable and isolated per tenant. It suits intermittent, unpredictable single-database workloads. Per-tenant isolation with predictable resource governance requires elastic pools with per-database resource governance, not serverless.
- ✗
Azure SQL Database single databases with DTU-based tier.
Why it's wrong here
DTU-based single databases share no pooled resource governance across tenants, so per-tenant performance management and predictable isolation across many databases are not delivered. DTU tiers suit individual databases with steady, self-contained workloads. Elastic pools provide the shared, per-database resource governance this multi-tenant scenario requires.
- ✗
Azure SQL Managed Instance with multiple databases.
Why it's wrong here
Azure SQL Managed Instance hosts multiple databases on one instance sharing its compute and storage, so per-tenant resource isolation and per-tenant performance management are absent. It suits lift-and-shift of instance-scoped SQL Server features. Elastic pools deliver per-database resource governance for multi-tenant SaaS.
Go deeper
Related to this question
Learn chapter
Deploying and Configuring SQL Server on Azure Virtual Machines
Key term
Azure SQL Performance Tuning
Azure SQL Performance Tuning is the process of optimizing the speed and efficiency of queries and database operations in Microsoft Azure SQL Database or SQL Managed Instance to reduce latency and improve throughput.
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Written by Johnson Ajibi, MSc IT Security
Senior Network & Security Engineer · founder of Courseiva
This DP-300 practice question is part of Courseiva's free Microsoft certification practice question bank. Courseiva provides original exam-style practice questions with explanations, topic-based practice, mock exams, readiness tracking, and study analytics to help learners prepare for the DP-300 exam.