Custom Software & Product Engineering · Service 08 of 10

Third-Party & API Integration Services outside services and APIs connected to your software, reliably

O Clock Software, headquartered in Chennai, India, provides API integration services that connect external services to your software: messaging and WhatsApp, maps and location, shipping and logistics, identity and sign-in, e-signature, and SaaS tools your teams already use. Each integration has error handling, retries and monitoring, so a provider outage does not become your outage.

Discuss your project → What we build
  • 2009Founded in Chennai
  • 1,000+Projects delivered
  • 12+Countries served
  • 100+Engineers in-house
  • 4.6★Google rating · 59 reviews

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What we build

Third-Party Integration: what we build

SaaS tools, shipping, messaging and identity providers connected to your software. Here are the six kinds of API integration services work we are asked for most often.

Integration categories

The integrations we build most often, and what can go wrong

Every external service fails sometimes. Designing for those failures is what separates a reliable integration from a fragile one.

Category Common providers What we design for
Messaging Twilio, WhatsApp Business Platform, SendGrid Delivery failures, opt-outs and message templates
Maps and location Google Maps Platform, Mapbox, HERE Usage limits, caching and offline fallbacks
Shipping Couriers and shipping aggregators Different label formats and tracking events
Identity Auth0, Microsoft Entra ID, Google, Apple sign-in Token expiry, account linking and security
E-signature DocuSign, Adobe Acrobat Sign Status callbacks and document storage
SaaS tools Salesforce, HubSpot, Zendesk, Slack API limits, data mapping and two-way sync

How we deliver

How we deliver Third-Party Integration

  1. 01

    Select the provider

    Shortlist and compare providers, or use your existing one.

  2. 02

    Design the adapter

    Your own interface in front of the provider.

  3. 03

    Build and secure

    Authentication, mapping, retries and webhooks.

  4. 04

    Test failure cases

    Timeouts, bad data and provider outages.

  5. 05

    Monitor

    Alerts, dashboards and usage tracking.

Technology

Technology for Third-Party Integration

Chosen per project for fit, maintainability and your team's skills.

Integration methods

  • REST APIs
  • SDKs
  • Webhooks
  • OAuth 2.0

Reliability

  • Retries with backoff
  • Dead-letter queues
  • Idempotency keys
  • Circuit breakers

Tooling

  • Postman
  • n8n
  • Message queues

Monitoring

  • Structured logging
  • Alerting
  • Integration dashboards

Straight answers

Is Third-Party Integration right for you?

We would rather recommend less than sell you more. Here is how we judge it.

A good fit when

  • Your product needs messaging, maps, shipping or sign-in
  • An existing integration is unreliable
  • You want to switch providers without rewriting your app
  • SaaS tools need to share data with your software

  • Your own internal systems need to share data

    See API & System Integration.

  • You need to build an API for others

    See API Development.

  • A no-code connector covers it

    Simple one-way syncs may be fine with a no-code tool.

Use cases by industry

Third-Party Integration by industry

The same capability, shaped by the data, rules and users of each sector.

Related services

Often combined with Third-Party Integration

Prefer engineers in your own team?

The full service area

FAQ

Third-Party Integration FAQ

What is a third-party integration?

A third-party integration connects your software to a service run by another company, such as a messaging, maps, shipping or sign-in provider, usually through that provider's API, SDK or webhooks.

How do you make third-party integrations reliable?

We add timeouts, retries with backoff, queues for failed requests, idempotency to prevent duplicates, and monitoring with alerts, so provider problems are handled and visible.

Can we switch providers later?

Yes, if the integration is designed for it. We put each provider behind your own interface, so changing provider means writing a new adapter rather than changing your whole application.

Can you integrate WhatsApp into our software?

Yes. We integrate the WhatsApp Business Platform for notifications and two-way conversations, including message templates and opt-in handling.

Do you handle API limits from providers?

Yes. We design around provider limits with caching, batching and queuing, and monitor usage so limits are not hit unexpectedly.

What is the difference between third-party integration and system integration?

Third-party integration connects your software to external services from other companies. System integration connects your own internal systems, such as ERP, CRM and warehouse systems, so they share data.

More Custom Software & Product Engineering services

Other Custom Software & Product Engineering services

10 Custom Software & Product Engineering services, one team. See the full Custom Software & Product Engineering area

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