Legacy Software API Integration Services

Modern APIs are integrated into legacy systems via wrappers, middleware, or adapters that translate modern REST/JSON or GraphQL calls into the formats your legacy systems understand (like SOAP, XML, or custom protocols).

API gateways (e.g., Kong, Apigee) are applied to manage, exchange, seamlessly promote APIs, Enterprise Service Bus (ESB), or iPaaS tools for orchestration and transformation, or application of the custom middleware or microservices that act as translation layers.

Legacy systems are rigid; that’s why integrating APIs without API partner, API organization could be complicated with incompatible data formats or protocols. The lack of native API system integration or a tightly coupled architecture makes modular integration hard. Moreover, absent documentation, performance bottlenecks, and security gaps are common for legacy systems in general.

The choice whether to replace or modernize depends on the general business strategy and technical assessment of the legacy system. The criteria include the system stability metrics, cost evaluation, planned timelines, etc. Sometimes it depends on the locations partner API. Often, businesses opt for hybrid modernization to minimize the expenditure and risks. They wrap legacy core with APIs, incrementally migrating or refactoring over time.

There are lots of tools; however, we’d recommend only several of them. For instance, MuleSoft is a full-featured integration and API lifecycle platform, becoming a one-for-one solution. Dell Boomi is a low-code iPaaS for cloud/on-prem integration for those who don’t require a deep coding expertise.

Furthermore, there are tools for every task. WSO2 is an open-source API management suite. Microsoft Power Platform is good for integrating with older Microsoft ecosystems. Apache Camel offers an integration for Java-based systems, while Kong / Apigee / Tyk provide modern API gateways. The decision is made according to our client’s needs.

At Devox Software, we prioritize data security, following all recommendations and requirements according to ISO standards and best practices:

• Encrypt data in transit and at rest (TLS, HTTPS, etc.),
• Implement API authentication/authorization (OAuth 2.0, API keys),
• Apply rate limiting and throttling,
• Audit logs and monitoring (including AI-powered audits),
• Secure tunnels and validate outputs to prevent injection attacks.

All together, these measures take security upon integration to the next level.

The API integration companies’ check ranges from $10,000 to $500,000 and above per project, depending on complexity, scale, and compliance requirements. The timeline also relies on the project scope, varying between 2 weeks to 6 months.

To process data exchange seamlessly, promote communications, API integrations must be maintained over time. We manage APIs with versioning and monitoring, test the endpoints integration, document interfaces and dependencies, and implement CI/CD pipelines for safe, incremental updates. All is for secure performance.

API organization works under the rules of how APIs are structured, named, and grouped, to exchange seamlessly, promote cooperation within a system or across an organization to ensure clarity, reusability, and data exchange seamlessly.

A Partner API allows external partners to access specific data or functionality of your system in a controlled and secure way. It’s more open than a private, used internally API, but at the same time, more restricted than a public API. Partner API excellent option suits mostly if the Partner API organization works with numerous vendors or external partners.