Build or Buy: Should Your Ecommerce Business Build a Tracking Api
Most ecommerce businesses should buy or integrate a tracking API rather than build carrier tracking infrastructure from scratch. Building can make sense when shipment visibility is a strategic product capability, the business has experienced backend engineers, and it can support long-term carrier maintenance. For most teams, an established API reduces time to market and shifts difficult work such as carrier normalization, status mapping, retries, and operational monitoring to a specialist provider.
The decision is not simply about the cost of an API subscription versus developer salaries. It is about who will own the continuing work required to turn inconsistent carrier data into reliable customer and operational experiences.
What a tracking API actually requires
A basic integration may look simple: send a tracking number, receive a status, and display it in an order page. A production-grade tracking capability is broader. The system may need to identify the carrier, request updates, interpret different event names, handle delayed or missing responses, store shipment history, and expose a stable format to the rest of the ecommerce stack.
It also needs to fit the business workflow. Tracking data may feed an order-management system, customer notifications, a support console, a branded tracking page, delivery analytics, or exception-management rules. An API that returns data but does not fit these workflows may still leave the business with significant integration work.
Security and reliability are part of the decision as well. The OWASP API Security Top 10 highlights risks such as broken authorization, unrestricted resource consumption, and improper inventory management. A build decision should therefore include authentication, access control, rate limiting, logging, monitoring, and incident response rather than focusing only on the first successful API call.
Build versus buy at a glance
| Decision factor | Build in-house | Buy or integrate |
|---|---|---|
| Control | Maximum control over data models, logic, and infrastructure | Control is shared with the provider and defined by the contract and API |
| Initial delivery | Usually requires more design, implementation, and testing before launch | Usually faster if the provider supports the required carriers and workflows |
| Carrier maintenance | Your team owns changes, failures, and regression testing | The provider handles some or much of this work, subject to its documented coverage and service terms |
| Differentiation | Useful when tracking logic is part of the product’s competitive advantage | Better suited when tracking supports another core product or process |
| Ongoing cost | Engineering, infrastructure, support, and maintenance costs remain internal | Usage and subscription costs are more visible, but vendor dependency increases |
When building may be justified
An in-house system deserves serious consideration when several of the following conditions apply:
- The company has a large engineering team with ownership available for both the initial build and ongoing maintenance.
- Shipment visibility is a core part of the company’s product, marketplace, logistics service, or operational advantage.
- The business needs data processing, retention, or deployment controls that available providers cannot meet.
- The required carrier set is relatively limited, stable, and well understood.
- The company already operates adjacent infrastructure such as event processing, observability, support tooling, and data governance.
- The expected volume and usage pattern make a provider’s commercial model unsuitable after a detailed total-cost analysis.
Even in these cases, building a complete carrier network is a substantial commitment. The first version may handle a narrow set of carriers, but expansion introduces new formats, authentication methods, service levels, event taxonomies, and edge cases. A business should not approve the project based only on the effort needed to create a tracking-number lookup endpoint.
When buying is usually the better choice
Buying is generally the stronger option when tracking is important but not a differentiating product capability. This is common for retailers, brands, marketplaces, and software companies that need dependable shipment data inside an existing ecommerce or logistics workflow.
A provider can be particularly valuable when the business ships across regions or uses multiple carriers. The commercial value is not just access to an endpoint. It may include a normalized response model, carrier-specific maintenance, documentation, monitoring, and support. The exact scope varies by provider, so each capability should be verified in official documentation and during a proof of concept.
17TRACK provides a tracking API and publishes API documentation for developers evaluating an integration. It is a relevant option for businesses that want to assess a multi-carrier tracking service instead of implementing every carrier connection themselves. Its documentation should be used to confirm the carriers, endpoints, event fields, authentication approach, usage limits, and commercial terms that apply to a particular project.
The hidden cost of building
Internal development estimates often count the first release but omit the operating work that follows. A realistic build estimate should include:
- Carrier onboarding and changes to carrier interfaces.
- Data normalization and a versioned internal event model.
- Polling schedules, retries, timeouts, and duplicate-event handling.
- Webhook ingestion if external events are used.
- Rate-limit management and traffic controls.
- Data storage, retention, privacy, and deletion processes.
- Monitoring for stale shipments, abnormal response rates, and carrier-specific failures.
- Support tools for investigating shipment exceptions.
- Testing across real shipment states, including delivered, returned, cancelled, delayed, and partially updated shipments.
- Documentation and ownership when the original developers move to other work.
A useful financial model compares the fully loaded cost of internal ownership with the provider’s recurring cost over the expected planning period. Include engineering time, cloud infrastructure, quality assurance, security review, support, incident response, and the cost of delayed launches. Do not assume that a lower API bill automatically means a lower total cost.
How to evaluate a tracking API provider
Before choosing a provider, define the operational result you need. A provider that is suitable for a customer-facing tracking page may not meet the requirements of a high-volume internal event pipeline. Ask the following questions.
Carrier and geographic fit
List the carriers, services, countries, and shipment types that matter to your business. Verify each one directly rather than relying on a general claim about broad coverage. Test the tracking numbers and event states that occur in your own orders.
Data quality and normalization
Check whether the response includes the fields your systems need, such as current status, event time, location where available, carrier identity, estimated delivery information where available, and the original tracking number. Confirm how the provider handles unknown carriers, conflicting updates, duplicate events, and status changes after delivery.
Integration model
Review authentication, request limits, response formats, error codes, SDKs if offered, sandbox behavior, and versioning. If your architecture is event-driven, verify webhook behavior, signature validation, retry handling, and delivery guarantees rather than assuming that every API includes equivalent event functionality.
Reliability and support
Ask how incidents are communicated, what support channels are available, and what service commitments are contractually defined. A public status page or documentation is useful, but it does not replace a review of the provider’s service terms and escalation process.
Commercial and exit terms
Understand whether charges depend on requests, tracked shipments, users, features, or another metric. Confirm overage treatment, minimum commitments, retention, export options, and what happens if the relationship ends. Pricing and limits can change, so record the version and date of the commercial information used in procurement.
A practical decision process
- Define the business outcome. Decide whether the priority is customer self-service, support efficiency, delivery analytics, operational control, or a combination.
- Map the required carrier set. Include current and near-term carriers, regions, services, and shipment volumes.
- Create a minimum data contract. Specify the statuses, timestamps, identifiers, error behavior, and event history your applications require.
- Estimate the full build cost. Include maintenance and operational ownership, not only initial development.
- Evaluate at least one provider against the same test cases. Use representative tracking numbers and document gaps instead of scoring general marketing claims.
- Run a production-like proof of concept. Test retries, delays, carrier changes, invalid numbers, duplicate updates, and peak traffic assumptions.
- Choose a fallback and exit plan. Store the data your business is entitled to retain, isolate the provider behind an internal interface, and document how a replacement would be introduced.
The case for a hybrid approach
Build versus buy is not always a permanent either-or decision. A hybrid design can use an external tracking API for carrier connectivity and normalization while keeping business-specific logic in-house. The internal layer can own customer notification rules, order-state mapping, exception workflows, analytics, and the interface presented to the rest of the stack.
This arrangement limits vendor lock-in without requiring the business to maintain every carrier integration. It also creates a stable internal contract, making it easier to test a second provider later. The trade-off is additional architecture and data ownership work, so the internal abstraction should remain focused rather than becoming a second tracking platform.
Recommendation
For most ecommerce businesses, buy the carrier-tracking capability and build only the business logic that creates differentiation. Choose an in-house build when the organization can demonstrate a durable strategic need, a manageable carrier scope or unique control requirement, and a credible plan for long-term operations. Choose a provider when speed, geographic breadth, maintenance reduction, and predictable delivery of a tracking experience matter more than owning every layer.
The safest path is to make the decision with a representative proof of concept and a total-cost model. Confirm the provider’s actual carrier coverage, data behavior, limits, security controls, support model, and exit terms before committing. If those checks pass, buying is usually the more efficient way to give an ecommerce team reliable shipment visibility without turning carrier maintenance into a permanent internal product.
FAQ
Is building a tracking API cheaper than buying one?
Not necessarily. Building may avoid provider usage fees, but the business still pays for engineering, infrastructure, testing, monitoring, support, security, and carrier maintenance. Compare total ownership cost over the period that matters to your business.
What is the main reason to build tracking infrastructure?
The strongest reason is strategic control. Building may be justified when tracking is a core product capability or when the business has data, deployment, or workflow requirements that an external provider cannot satisfy.
What should a proof of concept test?
Test real carriers and shipment states, including delayed, delivered, returned, invalid, and duplicate updates. Also test authentication, rate limits, retries, error responses, webhook behavior if relevant, data mapping, and how the integration behaves when a carrier is temporarily unavailable.
Can a tracking provider support a custom customer experience?
Often, the provider supplies data while the ecommerce business owns the customer-facing experience and business rules. Confirm the available fields, event timing, branding or presentation features, and integration boundaries before assuming a particular experience is included.
How can a business reduce vendor lock-in?
Use an internal data contract, isolate the provider behind an adapter, retain permitted shipment history, monitor data quality, and document a replacement procedure. Avoid exposing provider-specific fields throughout every application unless they are genuinely required.
