The SaaS Usability Index: Evaluating Software Across the Entire Buyer Journey

OpenSaaS started with the goal of increasing the usability and adoption of SaaS and open source. Focusing on usability first, we asked: What makes software usable? Of course, it has…

SaaS Usability Index

OpenSaaS started with the goal of increasing the usability and adoption of SaaS and open source. Focusing on usability first, we asked: What makes software usable?

Of course, it has to have the necessary features and good UX — but what after that?

Software usability cannot be defined or measured at any one point in time. It has to make its user’s life easier across lifecycle stages.

So we came up with the stages of the software buying and usage process first, and we published that here. You can download the sheet here too.

Now, coming to the premise: a good software should ideally make the life of its user smooth at all stages.

Most often, enterprise software is not won or lost on features.
It is won or lost on friction.

The best SaaS products are not the ones with the longest feature lists — they are the ones that make life easier at every stage of the customer lifecycle:

That is what usability means in enterprise SaaS.

And that is why we built the SaaS Usability Index — a lifecycle-based evaluation framework that measures usability not as UI polish, but as:

Operational ease across the full buying and governance journey.

This post introduces the model, the scoring system, and the stage-based structure we can consider, and invites review and feedback from IT leaders, CIOs, procurement leaders, SaaS product managers, GTM team members, and founders to make it a robust framework.


Why we needed a framework?

Because SaaS usability is broken in most evaluations.

Most SaaS scorecards focus on surface-level questions:

But in real enterprise buying, usability failures happen somewhere else entirely:

The product didn’t fail because it lacked features.
It failed because it created operational burden.

So the right question is:

Does this software reduce effort — or introduce new work?


Redefining Usability: Enterprise Usability Is Lifecycle Usability

In consumer apps, usability means:

In enterprise SaaS, usability means something very different:

So we define usability as:

The degree to which a SaaS product makes life easy across every stage of adoption, operation, and governance.

That requires mapping usability to the buyer journey itself.


The SaaS Buying Journey Is the Real Usability Surface Area

Enterprise SaaS is not a single moment.
It is a multi-year lifecycle:

A usable SaaS product must perform across all seven.

This is the foundation of the Usability Index.


Introducing the SaaS Usability Index

The SaaS Usability Index evaluates usability across seven lifecycle stages, each with measurable controls.

Each metric is scored from:

This produces:


Stage-Level Usability: Where Software Must Make Life Easy

Let’s walk through the journey.


Stage 1: Pre-Purchase / Discovery

Goal: “Can I trust this product quickly?”

Usability begins before a demo. Your team is not even aware of the potential customer, so the only thing the customer can refer to is the content you have put on the web.

Does that generate enough confidence in the mind of the customer?

Important signals include:

At discovery, buyers need clarity, confidence, and internal alignment.

Key usability metrics include:

A usable SaaS product reduces discovery friction.

Attachment: Stage-Level Scoring Sheet (Discovery Stage Metrics)


Stage 2: Vendor Evaluation & Selection

Goal: “Can this pass procurement, security, and IT?”

Most SaaS products lose here — not because they are bad, but because they are unverifiable.

Baseline usability requires:

Enterprise usability is the ability to clear approvals without heroic effort.


Stage 3: Onboarding & Implementation

Goal: “How fast can we get value?”

Time-to-value is usability.

The best products require minimal services, minimal friction, and guided deployment.

Key metrics include:

If onboarding takes 90 days, usability is already broken.


Stage 4: Identity & Access Configuration

Goal: “Can we govern access without complexity?”

Identity is where enterprise software becomes real.

Baseline usability requires:

If admins must manually manage joiners/movers/leavers, usability collapses over time.


Stage 5: Operations & Governance

Goal: “Can we run this safely forever?”

Enterprise software is not installed — it is operated.

This stage measures whether governance is continuous or manual.

Key metrics include:

The usability test here is simple:

Does the product reduce operational work — or create it?


Stage 6: Commercial Lifecycle

Goal: “Is renewal predictable and justified?”

Renewals are usability moments.

A usable SaaS product provides:

Renewal friction is often usability debt accumulated over years.


Stage 7: Risk, Exit & Replacement

Goal: “Can we leave safely if needed?”

The most overlooked usability dimension is exit usability.

Enterprise buyers fear lock-in more than missing features.

Baseline usability here includes:

A product you cannot exit is not usable — it is a trap.


The Master Usability Index Sheet

To make this framework operational, we consolidated all journey metrics into a single evaluation sheet.

This master sheet includes:

Attachment: Final SaaS Usability Index (Single Master Sheet)

This will be the canonical evaluation artifact used in future vendor deep dives.


Why Score = 3 Matters: The Enterprise Baseline Standard

A key innovation of this framework is the definition of acceptable usability.

Score 3 is not average.

Score 3 means:

In other words:

Score 3 is the minimum bar for enterprise-grade usability.


How We Can Use This Framework in Future Posts

This is the foundational post.

In future evaluations, we will apply this index to:

Each post will include:

This moves SaaS evaluation from opinion to operational scoring.


Closing Thought: The Best SaaS Is Invisible

The best enterprise software feels invisible — not because it lacks complexity, but because it absorbs complexity.

It makes:

That is usability.

And that is what the SaaS Usability Index measures.

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