API Architecture and Development Services

Leveraging Application Programming Interfaces (APIs) to connect your systems, devices and data with the rest of the digital world.



Connect your software applications and all the data they handle with virtually any other system in the world with standards-based APIs by 606 Digital. Our API architecture and development services enable external integration with systems like Salesforce, Microsoft Dynamics or Google, or internally with your own systems. We’ll develop APIs that can allow your business to publish data externally, making it available in real time for your customers, vendors and partners.


The experts at 606 Digital can help you design, build, publish and consume APIs using a modern RESTful architecture. We also provide support or enhancements for your existing SOAP-based web services.

Automate Business

APIs enable you to engage in Business Process Automation (BPA), connecting and orchestrating the systems that power workflows like payments and procurement.

Connect Systems
with Custom Middleware

Let us build custom middleware that connects your vital systems, such as in-house or cloud-based enterprise resource planning (ERP) software, or proprietary, home-grown applications. We give you the ability to continuously monitor the health of these integrations and track metrics that can provide insights about your organization.

Consume Data
from External APIs

Pull data from more than one million APIs available throughout the world, including those published by your partners, vendors and customers. Enrich your business processes and data with information from external sources, helping your organization run more efficiently than ever.

Publish an API

Our team can publish an API that allows your vendors, suppliers, partners, clients and customers to connect to your organization’s systems in real time, enabling true automation for all of your business processes.

Power Your Customer Portals, Websites and Apps

A properly architected API can be used not only by external systems, but also by your internal or public facing applications. Once your API is ready, it’s faster and easier than ever to build a customer portal, website or mobile app and make it available to the world.


APIs don’t have to be complicated. Our development team has the knowledge it takes to design and build secure, extensible APIs efficiently, utilizing modern tools such as Postman, SoapUI and Swagger. We’ll architect the right application for your specific API needs, taking the guesswork out of decisions like SOAP or REST, XML or JSON, and synchronous vs. asynchronous.


Our solutions span multiple industries and include decades of cross-industry exposure and perspective. From nationwide organizations and enterprise-level firms to the Illinois Tollway and the City of Chicago itself, we have a strong track record with the top companies and organizations in Chicago and across the country.

606 Digital Microsoft .NET Architecture and Development Clients


To learn more about how 606 Digital puts APIs into the service of your business strategy, contact us to speak with one of our API architecture and development experts.

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