WordPress sites are not just used only for publishing content but also can be used for complex applications like complex form processing, CRM, email marketing, e-commerce, and what’s not. Sometimes, You may run some tasks which can often be resource-intensive or time-consuming. For example: After submitting a frontend form, You may send the data to Google Sheet, send data to your external marketing services, send emails and say a few more. Each API calls will take its own time and if you wa...