The correct option is Business Critical.

The Business Critical tier is optimized for transactional workloads that need very low latency and high throughput. It places database files on local SSD storage and uses an Always On availability architecture with multiple replicas which reduces I/O latency and improves write and read performance for high concurrency systems.

The Business Critical tier also provides readable secondary replicas that can be used to offload read workloads and it supports high compute and in-memory options that help sustain many concurrent writes and reads while keeping response times low.

General Purpose is not ideal because it uses remote storage and is designed for balanced, cost efficient workloads that tolerate some additional I/O latency compared with local SSD storage.

Hyperscale is designed mainly for very large databases and fast scale of storage and backup operations. It is not primarily chosen for the lowest possible I/O latency for heavy, concurrent OLTP workloads.

Basic is intended for small development or light production workloads and it lacks the I/O throughput and concurrency capacity required for a real time, high throughput transaction system.

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