Edge Compute Checkout

Edge compute checkout refers to running checkout decision logic at distributed server locations near the buyer, rather than routing every evaluation back to a central origin server. It applies general edge-computing principles to commerce: if a decision has to happen while the buyer waits, moving the computation closer to the buyer shortens the round trip. Common platforms for this kind of workload include Cloudflare Workers, Fastly Compute, and AWS Lambda@Edge, which run code in lightweight isolates or WebAssembly (WASM) runtimes across many points of presence. WebAssembly matters here because it gives a portable, sandboxed, fast-starting execution format that can run the same logic on every node. The motivation is that checkout latency is sensitive: any decision inserted between the buyer's click and the confirmation page adds wait time, and slower checkouts tend to convert worse. Edge execution keeps that added time small for logic such as discount validation, tax or duty estimation, or personalization. The constraints are real, though. Edge nodes are far from the systems of record, so data such as live ERP cost has to be cached or replicated to the edge, which raises freshness and consistency questions. Cold starts, per-region observability, and debugging across hundreds of locations add operational work. And on hosted checkouts such as Shopify's, merchant logic inside checkout runs on the platform's own infrastructure (Shopify Functions), not on code the merchant deploys to an edge network, so 'edge checkout' is mostly relevant to custom or headless stacks. The other way to avoid the checkout latency budget is to move the margin decision out of checkout entirely. Agentis does not use edge compute or WASM: it reads each order after it is placed, computes true net margin within 60 seconds from live store data, NetSuite COGS, freight, fees, and FX, and flags the order or holds it before fulfillment under merchant-approved rules. That trade gives up the ability to change the cart in the moment, and in exchange the check has time to read authoritative cost data directly instead of a cached copy.