Hi i333, I came to know about you through some blogs. We have recently migrated from Shopify to Woocommerce, while hosting on siteground (cloud hosting, 5 Core, 10 GB RAM, 50 GB SSD). Ever since migration, 503 error has been rampant even after pretty good resources allocated based on flow of traffic. We need to have a detailed audit, find problem areas and figure proper solution. I can explain you further about our internal workflows so that you would know what exactly need optimization. Also would like to understand what would be optimum server resources we need to allocate based traffic and internal operational workflows.