Providing temporary use of non-downloadable cloud-based software for monitoring, traffic-proofing, load testing and measuring websites, website hosts, website services, website connectivity, website time-outs, website URLs, website protocols, website APIs, bandwidth limitations, error rates exceeding thresholds, server CPU limitations, errant load balancing configurations, router and firewall failures, misconfigured web servers, application servers and database servers, for finding, identifying and fixing related performance problems, for collecting related availability and performance data, for providing related performance metrics, diagnostics, alerts and reports, for interpreting related errors, for making related automatic contingency decisions, and for creating related contingency and remediation plans