Create a launch plan for a high-risk Radar feature for marketplaces

Problem Statement Description

Product context: Stripe is financial infrastructure for internet businesses; its products include payments, Checkout, Billing, Connect, Radar, Issuing, Terminal, and tax tools.

Stripe is preparing to launch a high-risk new Radar capability for marketplaces—platform businesses that onboard many connected sellers, route payments, manage disputes, and balance fraud prevention with seller and buyer conversion. The feature may affect payment authorization, review queues, fraud rules, connected-account risk controls, and marketplace-level liability, so the launch must be planned with exceptional care.

Your task is to create an execution-focused launch plan for this feature. Assume the product has strategic value for large and growing marketplaces, but an incorrect rollout could cause false positives, blocked legitimate buyers or sellers, increased disputes, compliance exposure, operational burden, or loss of trust with platforms that depend on Stripe for payments reliability.

The plan should account for multiple stakeholders: marketplace platform teams, connected sellers, buyers, Stripe risk and compliance teams, support, sales, account management, engineering, data science, and legal. The launch must also preserve Stripe’s expectations around developer experience, financial reliability, global compliance, conversion optimization, and merchant growth.

The experience should consider:

- Launch scope: which marketplace segments, geographies, payment methods, risk profiles, and account types are included or excluded at each phase.

- Sequencing: internal testing, sandbox readiness, private beta, limited production rollout, broader availability, and decision gates between phases.

- Ownership: clear roles for product, engineering, risk, compliance, data science, support, sales, and customer-facing teams.

- Dependencies: model readiness, rule configuration, dashboard/API changes, documentation, alerting, support tooling, legal review, and marketplace integration requirements.

- Go/no-go criteria: fraud reduction, false-positive rates, authorization impact, dispute trends, seller/buyer friction, latency, uptime, and support burden.

- Risk controls: rollback paths, feature flags, kill switches, customer opt-in or opt-out strategy, exception handling, and escalation paths.

- Communication: how Stripe informs marketplace customers, prepares internal teams, sets expectations, and handles incidents or customer objections.

- Post-launch operations: monitoring cadence, feedback loops, incident review, iteration plan, and criteria for expanding or pausing the rollout.

The goal is to demonstrate how you would safely bring a sensitive fraud-prevention feature to market for complex marketplace customers while balancing risk reduction, payment conversion, trust, compliance, and operational readiness.