Connecting your CRM to the rest of your tech stack can happen three fundamentally different ways: native integrations built by the vendors themselves, an iPaaS (integration platform as a service) that connects systems through a middle layer, or custom-built integration code developed specifically for your needs. Each fits different situations, and most organizations end up using more than one approach across their full stack.

Native Integrations: The Default Starting Point

For any tool pairing with a built-in native integration, this is generally the right default — purpose-built by one or both vendors, typically more reliable and deeper than alternatives, and usually included in the subscription cost without additional tooling.

Limitation: Only available for pairings popular enough to justify vendor investment. Less common or newer tools often lack native integration options entirely.

iPaaS: Flexible Coverage for Everything Else

An iPaaS platform connects systems through its own middle layer, using each system’s API to move data according to configured rules. This covers the gap left by native integrations — connecting tools regardless of how common the specific pairing is, as long as both have accessible APIs.

Limitation: Adds a third system into the data flow, which introduces both additional cost (most iPaaS platforms charge based on usage volume) and an additional point of potential failure, since you’re now dependent on the integration platform staying reliable and its connectors staying current as the underlying systems evolve.

Custom-Built Integration: Maximum Control, Maximum Responsibility

For highly specific needs that neither native integrations nor an iPaaS platform’s available connectors address well, custom-built integration code offers complete control over exactly how data flows and transforms between systems.

Limitation: Requires in-house (or contracted) development resources, both to build and to maintain over time as connected systems’ APIs change. This is the highest-maintenance-burden option of the three, appropriate mainly when the other approaches genuinely can’t meet a specific, important need.

A Decision Framework

Situation	Recommended approach
Popular tool pairing with a native option	Native integration
Less common pairing, standard data flow needs	iPaaS platform
Highly specific, complex transformation logic needed	Custom-built integration
High-volume, business-critical data flow	Native if available; otherwise carefully evaluated iPaaS
Low-stakes, supplementary data flow	iPaaS is generally fine even with some added risk

Building a Layered Integration Strategy

Most mature organizations end up with a layered approach: native integrations for their most common, business-critical connections; an iPaaS platform filling gaps for less common tools; and custom development reserved for the rare cases where genuinely specific logic is needed that neither other approach supports. This isn’t an inconsistent strategy — it’s matching the right tool to each specific integration need rather than forcing one approach across every connection.

Evaluating iPaaS Platforms Specifically

If you need an iPaaS platform, evaluate based on: breadth of pre-built connectors for your actual tool stack, pricing structure (often usage-based, which needs forecasting against your actual data volume), and the platform’s own reliability track record, since you’re adding dependency on this system staying available and performing well.

A Realistic Example

A mid-size company needed to connect its CRM to a specialized industry-specific quoting tool with no native integration and no existing iPaaS connector. After evaluating custom development against building a bespoke connector within a general-purpose iPaaS platform using its generic API-connection capability, the team chose the iPaaS route — slightly less elegant than fully custom code, but dramatically less burden to maintain going forward, since the iPaaS vendor handled underlying platform updates rather than requiring the company’s own developers to track and respond to API changes indefinitely.

Frequently Asked Questions

Is it ever worth building custom integration even when a native option exists? Rarely — a native integration is almost always preferable to custom development for the same functionality, given the ongoing maintenance burden custom code carries. Custom development makes sense specifically when existing options don’t cover a genuine, important need, not as a default preference for more control.

How do we evaluate whether an iPaaS platform is reliable enough for business-critical data flows? Check the platform’s uptime track record, read reviews specifically mentioning reliability for your relevant connector types, and consider starting with lower-stakes data flows before routing your most critical connections through a new iPaaS platform you haven’t yet built confidence in.

Does integration strategy need to be decided once, or does it evolve over time? It evolves — as your tool stack changes and as native integration options expand over time (a pairing without a native option today may gain one later), it’s worth periodically reassessing whether your current approach for each connection is still the best available option.

Who should own integration strategy decisions within an organization? Often shared between sales/revenue operations (who understand the business need) and IT (who understand the technical reliability and security implications) — a decision made by only one side tends to either underweight technical risk or overweight technical preference at the expense of genuine business need.

What’s the biggest mistake organizations make with integration strategy? Defaulting to whatever approach was used for the first integration, without reconsidering as needs diverge — an organization that started with heavy custom development sometimes keeps building custom integrations even once native or iPaaS options would now serve a specific need better and with less maintenance burden.

Does the integration strategy decision change for organizations with strict data governance requirements? Yes, often favoring native integrations and carefully vetted iPaaS platforms over custom-built code, since native and established iPaaS options typically come with clearer documentation and vendor accountability for how data is handled, which matters more under strict governance requirements than it might for a less regulated organization.

Should integration approach be documented formally for each connection, or left informal? Document it, even briefly — a simple record noting which approach each integration uses and why makes future troubleshooting and strategy reassessment considerably easier than relying on institutional memory that fades as team composition changes over time.

Next Step

For your next integration need, check for a native option first, then evaluate an iPaaS platform’s available connectors before considering custom development — working through the options in this order generally minimizes both cost and long-term maintenance burden.