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How to Build a Production-Ready Banking API Portal and Avoid EU Mistakes

  • ID: 5450344
  • Report
  • October 2021
  • Region: Europe
  • 25 Pages
  • Mercator Advisory Group


  • AIIA
  • Finicity
  • IBM
  • Mastercard
  • NoName Security
  • Plaid

This latest research report identifies the key issues that have delayed the deployment of the PSD2 Open Banking mandated API sets and compiles performance data that highlights the challenges. The report then breaks the challenges down into issues related to technologies versus issues related to standards implementation.

Finally, the report identifies the three core functional areas that establish a robust API portal and then rates 12 suppliers against key criteria that make up the three functional areas.

The suppliers considered are: Axway, Cloud Elements, FIS Global, Fiserv, IBM, Informatica, Jitterbit, Microsoft, MuleSoft, Software AG, TIBCO, and Token.io.

This report provides all the information required to understand why Europe has had so much trouble implementing the PSD2 mandate and how to evaluate a financial institution’s existing IT infrastructure to determine the API management platform that will fit well into existing infrastructure without duplicating key functions already operating effectively.

“Financial institutions have already made significant investments in data management and data sharing technologies, and most API management solutions duplicate some aspects of that infrastructure,” comments Tim Sloane, Research Director, and the author of the report. “Understanding what services are already available enables the selection of an API management platform that utilizes the technology you already have and adds all of the critical functions you need.”

Highlights of the report include:

  • A review of the technology, performance, and standards-related issues that have delayed the deployment of Open Banking in Europe.
  • A table that labels key issues as belonging to either standards-related problems or technology-related problems.
  • A review of key delivery models, from on-premise to cloud and aggregation models.
  • An architectural overview of key functions, from internal host integration and data management to the core API management function and the API connectors that are available to connect to external systems.
  • A review of the 12 suppliers against different criteria in the three functional areas described above.
Note: Product cover images may vary from those shown


  • AIIA
  • Finicity
  • IBM
  • Mastercard
  • NoName Security
  • Plaid

1. Executive Summary

2. Background

3. The Larger API Middleware Market

4. Building a Production-Ready API Portal

5. Multiple Service-Delivery Models

6. API Middleware Suppliers

7. Expected Market Evolution

8. Recommendations

Figures & Tables
Table 1: A List of Key Issues that Impact Availability of Open-Banking Solutions
Figure 1: API monitoring highlights open-banking performance issues.
Figure 2: API platforms integrate to bank systems and expose applications to third parties via APIs.
Figure 3: The Three Primary Components of an API Middleware Solution Within a Bank
Chart 1: Identifying Key API Middleware Capabilities of Suppliers

Note: Product cover images may vary from those shown


  • AIIA
  • Axway
  • Cloud Elements
  • Early Warning
  • Finicity
  • FIS Global
  • Fiserv
  • Fujitsu
  • IBM
  • Informatica
  • Jitterbit
  • LexiNexis
  • Mastercard
  • Microsoft
  • MuleSoft
  • NoName Security
  • OFX
  • Oracle
  • Phixius
  • Plaid
  • Postman
  • Salt
  • SAP
  • Slack
  • Software AG
  • The Financial Services Information Sharing and Analysis Center (FS-ISAC)
  • Tink
  • Token.io
Note: Product cover images may vary from those shown