Best Load Testing Tools for SaaS Platforms with Thousands of Concurrent Users (2026)
At thousands of concurrent users, the load testing tool is decided by resource shape, not a feature grid. This SaaS-scoped guide ranks k6, Gatling, Locust, and JMeter on concurrency model, multi-tenant noisy-neighbor testing, open-model traffic fidelity, and load-generator cost, using each tool's own documented figures.