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BlogsPayment Galaxy

Alternative cores: The new breeding ground for innovation

July 13, 20263 min read
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Erika Bailey (Bank Director) explores how banks are using APIs provided by alternative cores to fast-track innovation Years before the Covid-19 crisis pushed the banking industry headfirst into a digital-forward ecosystem, many financial institutions felt stuck in place.
While a few front-runners were making technological headway with modernized, adaptive core technologies — such as Deland, Florida-based Surety Bank, with $183 million in assets — many banks were tied to on-premises, decades-old systems.Still today, replacing the core — the backend system that processes all transactions — hasn’t become mainstream as a way to upgrade a bank’s technology. Instead, much of the industry seems to be moving toward a variety of outside solutions.And one of the most popular solutions has become application programming interfaces (APIs). In Bank Director’s 2021 Technology Survey, 63% of banks report using APIs.APIs function as passageways between software systems that facilitate data exchanges; in simpler terms, they allow systems to talk to each other. Layering APIs on top of legacy core systems allow them to interact with disparate third-party technology companies almost instantly, among other capabilities.Finzly, a Charlotte, North Carolina-based alternative core provider, advocates that banks not break their core contracts. The company’s VP of Marketing Suja Ramakrishnan says, “The core has been designed for certain functions. Let’s allow it to do what it is made to do and build a new innovation layer on top of it to let [the bank] do what it wants to do.”

Finzly integrates with a bank’s existing core via API calls. It’s hosted on Amazon Web Services, so no on-site installation is required. Once integration is complete, a bank can access Finzly’s products, as well as ancillary technologies that handle payments, account opening, foreign exchange and commercial business needs. “Alternative cores are breeding grounds for innovation,” Ramakrishnan adds.

While banks are still wondering how they can add more digital features and services, they have realized that they won’t have to change the core to find those answers.

There may be many advantages to replacing legacy cores, but it appears that many banks are content in using APIs as a Band-Aid to temporarily fix a longstanding problem. And with core conversion costly, replacing the core could be daunting for many banks. APIs buy a bank more time in figuring out their long-term core strategy.

Find out more about BankOS — the award-winning alternative core from Finzly.

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IBS Intelligence Report: Beyond Payment Rails – Reimagining Payments Through a Unified Core
American Banker Webinar On Demand: Real-time, unified ledger for traditional and tokenized banking: Enabling the next wave of deposit growth at banks
Webinar Report: ACH for Banks - Why "Good Enough" No Longer Works
Finzly Introduces Assure, AI-Powered Security, Assurance and Intelligence Layer
Finzly Named a Market Leader in the 2026 American Bankers Association Product Assessment of Payment Hubs
Finzly Certified for Request for Payment on the RTP® Network
  • Home
  • Products
    • Our ProductsComposable banking infrastructure built on BankOS. Deploy payments, accounts, treasury, and digital banking independently without replacing your core.
    • Second Column
      • Payment GalaxyA unified payment hub for orchestrating all payment activity from a single platform.
      • User profile and settings icon.Account GalaxyA modern virtual account and ledger platform, built to manage money at scale.
      • Digital Banking and finance network icon.Digital GalaxyA unified digital banking platform built to deliver consistent experiences across every channel.
    • Third Column
      • Global currency exchange and international finance iconTrade GalaxyOne platform for global money movement, trading, and risk management.
      • Token Galaxy Icon - Circular target or token icon.Token GalaxyManage traditional currency, stablecoins, and tokenized deposits from a single platform for digital money.
      • Agentic GalaxyEmbed Al directly into your banking operations with governance built in from the start.
  • Solutions
    • Our SolutionsModern banking capabilities for every strategy. From instant payments to embedded banking, deploy what you need without core replacement.
    • Second Column
      • Payment Modernization Icon - Mobile wallet or contactless payment icon.Payment ModernizationMigrate ACH, wires, and payment processing to modern orchestration without touching your core banking system.
      • Embedded Banking & BaaS Icon - Smartphone with checkmark icon.Embedded Banking & BaaSVirtual accounts, multi-rail payments, and real-time ledgers. Built for fintechs that move fast.
      • Pay by Bank icon - Mobile banking and bill payment icon.Pay-by-BankLaunch account-to-account payments on FedNow and RTP. Eliminate interchange fees.
    • Third Column
      • Icon of a hand holding money with a dollar sign, and another hand pointing to it. Two arrows above indicate a transaction or money transfer. The image is in a simple purple outline style.Unified Banking ExperiencesLaunch instant payments and personalized experiences without replacing your core.
      • Treasury & Cash Management icon - Money stacks and coins icon.Treasury & Cash ManagementConsolidate cash positions, automate payments, forecast with AI-powered precision.
      • Build your bank Icon - Bank building with dollar sign icon.Build Your Bank Your WayDeploy payments, accounts, treasury, and digital banking independently. No core replacement required.
  • Platform
  • Resources
    • Blogs
    • Customer Stories
    • Industry Insights
    • Press Releases
    • Webinar on Demand
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    • About Us
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