A build ends with a system that works today. Operations Partner is what keeps it working tomorrow: monitoring, fixes when a vendor's tool changes, model updates, a monthly report, and engineers on call. World Spa has worked with us this way since 2023.
Part of the marketing retainer, which includes site support. $2,300 a month · all three products
A build ships once. Running it is ongoing: tools change their APIs, models get better, traffic patterns shift, something breaks at the worst time. Operations Partner covers that work for the AI systems Simple4u builds.
Production breaks at the worst time: a booking integration stops, a webhook drops, a model call starts failing. We triage and ship the fix. The engineers on call are the ones who built the system.
Google changes a report format. A vendor deprecates an endpoint. A payment processor changes its webhook shape. We watch for it and patch the system before it fails silently on you.
AI models move fast. When a newer model does the job better or cheaper, we test it against your real data and switch when it is a clear improvement, not before.
A short report each month: what the system did, what we changed, what we recommend next. Written for the person running the business, not for another engineer.
Every engagement starts the same way: a call, a free one-page plan, a fixed-price first build. Operations begins after that, on a monthly retainer scoped to what you actually have running. See how we work for the full sequence.
We agree the shape monthly: what's covered, how fast we respond, how much of the month goes to fixes versus evolutionary changes. No dollar figure published here, because it is scoped to your systems, not a rate card.
We have operated World Spa's systems this way since 2023: the AI concierge, the booking and payment integration, the marketing reporting. The retainer grew as the systems did, one conversation at a time.
Real systems we run right now for World Spa, a 50,000 sq ft wellness destination in Brooklyn and a client since 2023.
About 40 guest questions a day, answering from World Spa's own pages and policies. We monitor uptime, review transcripts weekly, and adjust responses as staff report new questions.
The spa's TAC booking system wired to Adyen payments. When TAC changes an API or Adyen updates a webhook contract, we patch it before a booking fails.
GA4 and Search Console read weekly. Content and SEO adjusted monthly, working next to World Spa's in-house marketer, not instead of them.
Most ongoing work follows a first build. Operations Partner pairs with the system we built or the specialty work you need alongside it.
Simple4u is a six-person team: founder in Brooklyn, engineers in Kyiv. Embedded with World Spa since 2023, rebuilding NYC by Yacht’s site and search since December 2025, and our own company on the same kind of systems.
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