API & System Integrations
Connect your business systems with robust API development and third-party integrations that eliminate data silos and manual processes.
Modern businesses run on dozens of software systems -- CRM, ERP, e-commerce, accounting, marketing platforms, shipping providers -- and the value of each system multiplies when they share data seamlessly. Manual data entry between disconnected systems wastes time, introduces errors, and prevents real-time decision-making. At MMM Software, we build the connections that make your software ecosystem work as one.
Our integration practice covers everything from simple point-to-point API connections to complex middleware architectures that orchestrate data flow between multiple systems. We design for reliability first: every integration includes error handling, retry logic, monitoring, and alerting so you are never caught off guard by a silent failure.
We have particular expertise in the Bulgarian business ecosystem, including integrations with NAP for fiscal compliance, Speedy and Econt for domestic shipping, local payment processors, and government databases. Combined with our experience connecting to global platforms like Stripe, Google, Facebook, and Salesforce, we can bridge the gap between local operations and international services.
What's Included
REST API Development
Well-documented RESTful APIs with versioning, rate limiting, authentication, and comprehensive error handling.
GraphQL APIs
Flexible query-based APIs that let clients request exactly the data they need, reducing over-fetching and improving performance.
Webhook Systems
Event-driven integrations that push real-time notifications when data changes, eliminating the need for constant polling.
Payment Gateway Integration
Stripe, PayPal, Braintree, and local Bulgarian payment processor connections with PCI-compliant transaction handling.
Accounting Software Sync
Bidirectional synchronization with accounting systems for invoices, payments, expenses, and financial reporting.
Shipping & Logistics APIs
Integration with Speedy, Econt, DHL, FedEx, and other carriers for automated label generation, tracking, and rate calculation.
Government & Regulatory APIs
Connections to NAP (Bulgarian tax authority), NSSI, trade registers, and EU regulatory databases for compliance automation.
Marketing Platform APIs
Facebook Ads, Google Ads, Mailchimp, SendGrid, and analytics platform integrations for automated reporting and data flow.
Legacy System Integration
Middleware solutions that bridge modern applications with legacy systems using SOAP, FTP, database-level, or file-based integration.
API Gateway & Management
Centralized API management with authentication, rate limiting, usage analytics, and developer portal for internal or public APIs.
Industries We Serve
Frequently Asked Questions
We implement OAuth 2.0 or API key authentication, TLS encryption for all data in transit, input validation and sanitization, rate limiting to prevent abuse, and IP allowlisting where appropriate. For sensitive integrations, we add request signing and audit logging.
Yes. For systems without APIs, we use database-level integration, file-based exchange (SFTP, shared drives), screen scraping as a last resort, or build middleware that translates between formats. We have connected to legacy systems running everything from COBOL to Access databases.
We implement idempotent operations, retry logic with exponential backoff, dead-letter queues for failed messages, and reconciliation checks. For critical data, we use transaction-based sync with rollback capabilities.
We design integrations with abstraction layers so third-party changes are isolated to a single adapter module. We also monitor API changelog feeds and deprecation notices, and include API health checks in our monitoring dashboards.
Ready to get started?
Let's discuss how api & system integrations can transform your business operations. Free consultation, no strings attached.