Payment Gateway and CRM Integration for an Event Ticketing Platform
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Overview
What we built
An event ticketing platform kept losing sales at its busiest moments, when its single payment gateway buckled under on-sale demand. We gave payments a second path and connected the platform to its CRM.
In plain terms: when a popular event went on sale, buyers rushed to checkout together, and the platform's only payment gateway kept failing under exactly that load. Every stretch of downtime turned ready-to-pay customers away at the worst possible moment, and cards that were softly declined were simply written off rather than retried. Marketing ran on guesswork too, because purchase activity never reached the CRM in any dependable form, so campaigns went out with no relation to what customers actually bought.
We rebuilt the payment path with a primary and a fallback gateway that fails over automatically, added a retry workflow that recovers soft-declined transactions, and connected the ticketing platform to the CRM with a bidirectional sync. Payment failures during on-sale periods fell from 12% to 1.4%, retry logic alone recovered an estimated $34,000 in sales in the first quarter, email click-through rates rose 58% on the back of behavioural segmentation, and the 12 months after launch passed without a single revenue loss event from gateway downtime.
The Problem
Single gateway failing at peak
Ticketing demand is brutally spiky. For most of the week the platform's single payment gateway coped comfortably; the moment a high-demand event went on sale, traffic concentrated into a short window and the gateway repeatedly failed under it. The platform lost sales at exactly the moment customers most wanted to buy, and there was no second path for a payment to take.
The losses were not limited to outages. Soft-declined transactions, the kind that often succeed on a later attempt, were treated as final, so recoverable revenue quietly leaked away with every on-sale. During peak periods the payment failure rate reached 12%, meaning a meaningful slice of every major launch ended in a failed checkout rather than a ticket.
The disconnect between the ticketing platform and the CRM compounded the damage. Purchase behaviour never reached the marketing system in a usable form, so campaigns went out untargeted, customers received emails with no connection to the events they actually attended, and the platform had no reliable way to win back the buyers its checkout had just failed.
Single point of failure
One payment gateway carried every transaction, so any downtime during an on-sale stopped all revenue with no alternative route available.
Failures at peak demand
The gateway went down precisely during high-demand on-sale windows, when buyer intent, and therefore the cost of every failure, was at its highest.
Lost soft declines
Transactions declined softly were never retried, so payments that would likely have succeeded on another attempt were written off as permanent failures.
Blind marketing
The ticketing platform and the CRM did not talk, leaving campaigns untargeted and the marketing team unable to segment customers by actual purchase behaviour.
What it was costing them
During peak on-sale periods 12% of payments failed, and each failure landed on a customer actively trying to hand over money. Gateway downtime turned launch moments into revenue loss events, soft declines leaked recoverable sales, and untargeted email campaigns underperformed for want of purchase data. The platform's busiest days, the ones every event depended on, were also its most fragile.
The Solution
Gateway failover with CRM sync
We attacked the fragility first. A second payment gateway now sits alongside the primary, with automatic failover between them: if the primary degrades or goes down during an on-sale, transactions route to the fallback without the customer noticing anything beyond a normal checkout. The single point of failure that had defined every launch simply no longer exists.
For the revenue that used to leak, we implemented a payment retry workflow for soft-declined transactions. Instead of treating a soft decline as final, the workflow retries the transaction, converting a class of failure that had previously been written off entirely into completed sales. The effect is invisible to buyers and cumulative for the business, because it works quietly on every on-sale.
We then built a bidirectional sync between the ticketing platform and the CRM. Purchase and event data flows into the CRM, where it powers behavioural segmentation, and campaign outcomes flow back the other way, so the marketing team finally targets customers based on what they actually buy and attend rather than on a stale, disconnected list.
Key decisions
Two gateways, automatic failover
A fallback gateway takes over the moment the primary struggles, so an outage during an on-sale degrades nothing that a buyer can see.
Failover invisible to buyers
Switching between gateways happens inside the checkout flow with no customer action required, because asking a buyer to try again is how sales get lost.
Retry soft declines specifically
The retry workflow targets soft-declined transactions, the failures most likely to succeed on a later attempt, rather than hammering every declined card indiscriminately.
Sync in both directions
The CRM integration is bidirectional: purchase behaviour flows out to power segmentation, and campaign engagement flows back into the ticketing platform.
Measurable Impact
What changed after launch
The payment numbers tell the sharpest story. Failure rates during on-sale periods fell from 12% to 1.4%, and in the 12 months following the integration the platform recorded zero revenue loss events from gateway downtime. Launch days stopped being the operation's most fragile moments. The retry workflow alone recovered an estimated $34,000 in sales in the first quarter.
The CRM sync changed how the platform speaks to its customers. With purchase behaviour finally flowing into the marketing system, campaigns moved from broadcast to behavioural segmentation, and email click-through rates improved by 58%. The platform now compounds its wins: more completed checkouts feed richer customer data, which feeds better-targeted campaigns, which bring buyers back for the next on-sale.
Payment resilience
One gateway, frequent downtime during on-sale peaks
Primary and fallback gateways with automatic failover
Failure rate
12% of payments failing during on-sale periods
1.4% failure rate after failover and retries
Declined transactions
Soft declines written off as lost sales
Retry workflow recovered an estimated $34,000 in the first quarter
Marketing targeting
Untargeted campaigns with no purchase data
Behavioural segmentation lifting click-through rates by 58%
Headline results
Payment failure rate during on-sale periods reduced from 12% to 1.4%
Recovered an estimated $34,000 in sales in the first quarter through retry logic alone
Email campaign click-through rates improved by 58% through behavioural segmentation
Zero revenue loss events due to gateway downtime in the 12 months following integration
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