Most WordPress performance problems get traced back to the hosting environment, which is sometimes the right diagnosis. However, third-party dependencies trigger the same alarm bells, yet live outside the host’s control.
Timed-out payment gateways, unresponsive shipping APIs, and slow analytics scripts are all failures you can only implement damage control for. However, this depends on your hosting infrastructure and what you can do at the application level to keep your site functioning when dependencies fail.
Why third-party dependencies create cascading WordPress failures
A modern WordPress site rarely runs in isolation. For instance, think
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