API & Systems Integration in Nigeria: What It Actually Costs

• ✓Removing duplicate data entry between two or more platforms
• ✓Connecting a website, app or portal to a payment provider
• ✓Syncing customer or transaction data between a CRM and other business systems
• ✓Automating handoffs between departments (sales to finance, HR to payroll, support to operations)
• ✓Building a single reporting layer across tools that don't talk to each other natively
• ✓Exposing an internal system's data through an API so other tools — or a mobile app — can use it

1. Have they integrated with the specific systems you use? Every platform's API has quirks — rate limits, authentication models, data formats. Direct experience with your stack reduces risk. 2. How do they handle failures? A dropped connection, a rate-limited API call or a malformed record should not silently lose data. Ask what happens when a sync fails. 3. Is the integration one-way or two-way? Clarify whether data flows in one direction or needs to stay in sync in both directions, and how conflicts are resolved. 4. Who monitors it after launch? Integrations break when a third-party API changes. Ask how issues are detected and who is responsible for fixing them. 5. How is sensitive data handled in transit? Especially for payment, identity or health data moving between systems, ask about encryption, access control and NDPA-aware handling. 6. Can they build a new API, not just consume one? Some integration work requires exposing your own system's data securely to another platform — a different skill from calling someone else's API.

Cost depends on how many systems are being connected, whether their APIs are well-documented or require reverse-engineering, whether the sync needs to run in real time or on a schedule, and how much error-handling and monitoring the integration needs to be trustworthy in production. Connecting two modern, well-documented APIs is a different scope from integrating with an older system that has no API at all and needs a custom connector built first.

If an existing CRM, ERP, HR or finance system still does its core job, the higher-value first step is usually connecting it to the rest of the operation rather than replacing it. See our digital transformation and systems integration guide for how we scope a consolidation-first transformation programme, or our ERP & CRM integration guide if those two systems specifically are the gap.

Our engineering discipline for integration work is shaped by running Avant One, the wider Avant Tech group's customer-operations platform, where case management, engagement and collections workflows share customer context across systems in production — not a one-off client integration built and forgotten. See how that same discipline applied to a public-sector build in the LASHMA case study.

We treat integration as engineering, not plumbing — with the same architecture discipline, monitoring and NDPA-aware data handling we apply to any custom build, because a broken integration is often more damaging than no integration at all.

Explore our custom software development service or discuss your integration project.