I am asking about the performance testing lifecycle, starting with requirement gathering and ending with test execution and analysis. Have you ever done end-to-end performance testing?

The performance testing lifecycle typically follows these stages:

1. Requirement Gathering – define performance goals, KPIs, and success criteria.
2. Test Planning – decide scope, test types, tools, and resource allocation.
3. Test Design – create scenarios, scripts, and data sets that reflect real user journeys.
4. Environment Setup – provision hardware, network, and monitoring tools.
5. Test Data Preparation – generate realistic data volumes and user profiles.
6. Test Execution – run load, stress, and endurance tests while monitoring metrics.
7. Result Analysis – analyze response times, throughput, resource usage, and bottlenecks.
8. Reporting & Defect Management – document findings, recommend fixes, and retest.

End‑to‑end performance testing covers the entire application stack—from the UI through APIs, middleware, and databases—ensuring that all components interact correctly under load. I have led such tests for a SaaS platform, simulating 5,000 concurrent users performing login, data retrieval, and transaction workflows, and identified a database connection pool bottleneck that was resolved before production.