Architecture comparison
E-Commerce
Migrated to Google Cloud; a Rails 'majestic monolith' sharded into pods over MySQL (Vitess) with Kafka. Shopify Magic/Sidekick AI uses OpenAI; storefront stack (Hydrogen/Remix) is open-source.
Website Builder
Website/commerce builder historically on its own data centers, increasingly cloud-hybrid; polyglot persistence (MySQL/MongoDB/Cassandra). AI site-generation and copy use OpenAI.