APIs or Application Programming Interfaces are defined interfaces which enable interactions between enterprises and applications. An API are often the first entry point for an internet site and applications also for third party integrations. they’re focused towards programmable web which include web and native applications. they’re a typical method of interconnecting system components. within the context of monetary services, they need been mentioned as game changers. APIs are at the guts of all smartphone applications and repair driven websites as they permit to accumulate data from multiple sources and use them in several ways. The risks related to application failure have a broader impact on business. Hence, the integrity of the APIs used is more important. API testing ensures its security, reliability and performance within the business critical applications.

The API approach is an architectural approach revolving around programmable interfaces to a group of services for various applications for various sorts of customers. This approach creates a loosely coupled architecture which allows a component service to possess a good range of future uses and is technology agnostic.

API implementation results in the subsequent benefits

Cost Reduction: APIs are a less expensive way of building applications by increasing the reuse of services. With the rise in applications the advantages are more evident.

Increase in business Agility: the power of API integration with any technology stack, allow higher productivity for developers. Also, APIs, let the enterprise reach out a bigger pool of application developers to create apps on an appropriate eco-system.

Increase in Innovation and new Business Models.

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Increase in consumer loyalty: Through innovation and new models, the enterprise can increase brand awareness and loyalty. These early users eventually drive the market into new directions that the enterprise in promoting.

To harness the new found support for APIs, the banking system mostly pursues the subsequent common strategies:

Banks reorient the architecture towards enabling a build and replace program. Here, when new services are built as REST APIs to exchange existing services.
API leaders build cross departmental support and interest in an API strategy. New APIs are created through more collaboration between business and engineering and an API design approach is adopted that ensures internal APIs are often opened to partners or third party providers.
Banks build development expertise, including best practices in developer engagement to leverage external innovation with developers within the future.
A comprehensive API Testing is important for the vital business critical APIs and API driven applications. With APIs, a broad range of conditions and cases got to be covered. Hence automation involves the forefront. thanks to the business critical banking transactions, highly sophisticated and extensive test automation is required that gives a comprehensive set of functional test cases, reusable during a systematic manner.

Continuously evolving APIs help organizations stay ahead while responding to the business needs. These frequent changes present significant risks in quality if the test suite runs behind the evolution. Hence, the impact of the changes should be assessed and required changes should be made for updating existing tests.

As API’s are highly exposed to consumers, there’s a high potential of unpredictable increase in traffic volumes. to work out the API’s performance within the event of erratic demand, it’s essential to perform a radical performance testing.

A banking API, thanks to its criticality features a greater area for attack. Hence, a multi-faceted testing strategy in essential to make sure that appropriate levels of security has been built into the appliance .

Conclusion

A financial application deals with management of monetary business processes. Using new technologies, a corporation are going to be ready to shift left in their functional testing and expose more defects with easier, faster and fewer expensive methods to repair them. to realize quality objectives, the corporate must create reusable test assets that might enable exhaustive testing of the services provided. Running different test types also help to validate the API across different perspectives.

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