One Integration. Full Coverage.
APPIE is a payment interoperability layer designed for two critical use cases.
On the terminal, APPIE eliminates fragmentation by enabling processors to integrate once and operate across any ECR/POS environment—making terminals fully ECR/POS agnostic.
On the processor host, APPIE abstracts infrastructure complexity, allowing processors to merge, replace, or upgrade backend systems without requiring merchants to recertify or reintegrate—ensuring zero disruption on the merchant side.
Terminal Fragmentation Is Slowing Growth
Every new merchant environment introduces integration overhead.
Different POS systems. Different protocols. Different certification paths.
Scaling becomes constrained not by demand, but by compatibility.
Integrated Payments
According to a Visa survey, 87% of merchants choose their payment provider at the same time as, or after, selecting their business software
Independent Software Vendors
There are an estimated over 750,000 ISVs operating globally as of 2024-2026
Time and Cost
Integrating an ISV POS/ECR system with processors typically takes 2–5 months and can cost $20,000 to $100,000+
On going cost
Custom Sim-Integrated solutions require ongoing engineering teams costing $50K–$150K annually, turning integrations into a permanent operational burden rather than a one-time project.
How APPIE Works
A Compatibility Layer Built for Scale
APPIE operates directly within the payment environment, translating, normalizing, and orchestrating communication between disparate systems.
Protocol Translation
Normalize any ECR communication
Profile-Based Interoperability
Extend coverage without new integrations
Processor Bridge
Connect seamlessly to existing semi-integrated layers
Governed Lifecycle
Control rollout, validation, and updates centrally
Why Large Processors Choose APPIE, Built for Scale, Not Workarounds
Recurring billing is not just for creating a customer base and fixed income for the brand. Access a suite of solutions that help you track, manage, and notify customers about upcoming payments for every plan.
APPIE is not another payment gateway.
APPIE is the layer that lets processors change gateways—without anyone noticing.
APPIE is not a replacement for your payment stack — it is an extension of it.
At the terminal level, APPIE complements your existing semi-integrated architecture by introducing a unified interoperability layer across fragmented ECR and POS environments.
At the host level, APPIE integrates with your ingress layer to manage, normalize, and transport transaction requests into your gateway infrastructure—without disrupting existing systems.
This Is Not an Integration Tool. It’s an Infrastructure Advantage.
APPIE on Terminal
APPIE transforms terminal integration from a bottleneck into a scalable capability.
Processors can expand into new merchant environments without re-architecting their stack.
Integration becomes reusable. Deployment becomes controlled. Growth becomes predictable.
APPIE on Host
Processors can evolve, merge, or replace backend systems without impacting merchant integrations.
Infrastructure becomes abstracted. Changes become seamless. Availability becomes resilient.
What APPIE On Host Is?
APPIE on Host is a payment orchestration and interoperability layer that sits between merchants and multiple payment gateways, enabling processors to unify, translate, and route transactions across any protocol, host, or version—without requiring merchant-side changes.
It ingests traffic from any integration type (REST, SOAP, ISO 8583, proprietary formats), automatically detects the protocol, normalizes it into a canonical payment model, and routes it to the optimal backend host using policy-driven logic. Every request and response is translated in real time, preserving original message structure while enabling backend flexibility.
APPIE operates as an event-driven, multi-protocol execution engine, capable of handling millions of transactions with full auditability, replay, and deterministic behavior. It supports advanced migration modes such as shadow, dual-run, canary, and phased rollout, allowing processors to test and validate new gateways without impacting merchants.
Problems Solved, Opportunities, and Benefits APPIE ON HOST
The Problem APPIE On Host Solves
Combine your recurring billing with more payment methods in one platform and increase your revenue. Leverage the RapidCents platform to run your payments seamlessly while allowing your customers flexibility.
Protocol Fragmentation
Handles REST, SOAP, ISO8583, binary, and proprietary formats in one unified layer
Operational Complexity
Centralizes routing, translation, monitoring, and fallback logic into a single control plane
Get your queries answered
FAQs
- Not a processor replacement
- Not a gateway
- Not a bypass for certification
APPIE integrates into your existing infrastructure—enhancing it without disruption.
APPIE introduces a unified interoperability layer between ECR/POS systems and your existing infrastructure.
Instead of building integrations per environment, you integrate once—and extend coverage through profiles.
Before: N POS Systems → N Integrations → N Certifications After: N POS Systems → APPIE → 1 Integration
Before:
N Processor Systems → N Merchant Integrations → N Recertifications
After using the APPIE on host:
N Processor Systems → APPIE → 0 Merchant Changes
APPIE = One integration → Profile-based expansion
Even with semi-integration:
- Certification is still required per flow / variation
- Testing cycles slow onboarding
Semi-integration reduces PCI/EMV scope but doesn’t eliminate validation
- Pre-built protocol handling
- Rapid profile configuration
Turns onboarding into weeks instead of months
- Normalizes all protocols into one format
- Abstracts complexity from processor core
You don’t rewrite your backend for every protocol
Semi-integration helps with security (terminal → processor direct flow)
BUT:
- Each vendor behaves differently
- APIs differ
- Edge cases vary
- APPIE sits between merchants and the new infrastructure
- Translates old gateway formats into new ones
- No merchant changes required
Gateway replacement becomes invisible to merchants