RESTful API Architecture
Clean resource-oriented APIs designed with strict semantic HTTP status codes, granular filtering, sorting, pagination, and JSON:API or OpenAPI specification compliance.
System Integration
Custom API Development & Integrations
High-concurrency RESTful APIs, WebSockets, payment gateways, and third-party SaaS integrations engineered for high throughput, strict security, and 99.9% uptime.
Direct Answer
What is custom API development and integration?
Custom API development and integration services deliver secure, high-concurrency RESTful and WebSocket interfaces connecting disparate business platforms, payment processors, and third-party SaaS tools. Acelizum Technologies designs resilient webhook architectures, idempotent data pipelines, and OpenAPI-compliant microservices built for maximum throughput and 99.9% uptime.
Sub-80ms Query Response
HMAC Signature Verification
Automated Retry Queues
Rate Limiting & WAF Protection
API Capabilities
Resilient connectivity connecting your platforms and external partners
A broken integration stops business operations. We build defensive integrations that anticipate network drops, handle upstream rate limits, and recover automatically.
Payment Processor Integrations
Seamless integrations with Stripe, PayPal, Square, Authorize.net, and local bank payment switches with real-time webhook listeners for chargebacks and refunds.
Webhook Pipelines & Queues
Asynchronous webhook delivery with exponential backoff retries, HMAC signature validation, dead-letter queues, and replay capabilities to prevent dropped events.
Real-Time WebSockets
Two-way real-time communication via Laravel Reverb, Pusher, or Socket.io for live operational telemetry, order status updates, and in-app chat systems.
CRM, ERP & SaaS Synchronization
Two-way synchronization bridges connecting Salesforce, HubSpot, Zoho, SAP, or custom legacy enterprise databases without manual double-entry.
Cloud Messaging & WhatsApp API
Automated WhatsApp Cloud API, Twilio SMS, SendGrid, and push notification pipelines for transaction receipts, flight updates, and customer service alerts.
Production Reliability
Built to survive third-party outages and latency spikes
When an upstream partner API slows down, your application shouldn't freeze. We implement circuit breaker patterns, request timeouts, and asynchronous background jobs so external service disruptions never degrade your core user experience.
Read about our approach to enterprise Laravel backends or review our client case studies.
Comprehensive OpenAPI (Swagger) specifications for smooth partner onboarding.
Idempotency keys ensuring payments and orders cannot be double-processed.
Granular rate limiting and IP whitelisting protecting against abuse.
Real-time endpoint health checks and automated incident alerting.
API FAQ
Frequently asked questions about our API engineering
How do you secure public and partner APIs?
We enforce TLS 1.3 encryption, OAuth2 or JWT token authentication with short expiry periods, HMAC-SHA256 signature verification for webhooks, CORS restriction policies, and IP rate limiting at both the NGINX and application layers.
Can you integrate legacy systems that lack REST APIs?
Yes. We regularly connect modern applications to legacy systems via direct SQL database synchronization, automated SFTP CSV imports, SOAP XML protocols, or custom middleware wrappers.
How do you handle API documentation for frontend and mobile teams?
We generate interactive OpenAPI 3.0 (Swagger) and Postman collections complete with request payload schemas, example responses, authentication guides, and mock environments for rapid frontend integration.
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