From PRD to POC: How Vibe Coding Is Transforming Product Development

By Nadav Cornberg - Founder & CEO, Eve Security

For years, product teams have followed the same slow, document-heavy pattern: Product Managers write a PRD → Engineering interprets → Work begins.

But PRDs often fail to capture the real nuance behind a product idea. Engineering spends cycles interpreting documents rather than building, and misalignments emerge late in the process. The result: slower delivery and reduced innovation.

At Eve, we challenged this assumption, and rebuilt our process from the ground up.

The Shift: From Document to Demonstration

Traditionally, a Product Requirements Document (PRD) outlined what should be built. But even well-written PRDs still left engineering teams guessing the true intent behind the requirements.

With the introduction of Vibe Coding, that changed.

Product Managers now deliver a working proof-of-concept (POC) instead of a document. Engineering no longer reads descriptions of behavior, they interact with it.

This has fundamentally reshaped how we build.

What Vibe Coding Makes Possible

Vibe Coding enables non-engineers to build interactive flows, interfaces, and functional logic using natural language.

But the real breakthrough is this:

These POCs are fully functional — not mockups.

A Vibe-built POC can include:

• Real API integrations

• Dynamic data and state management

• Business logic and early algorithmic behavior

• Multistep flows and exception handling

This goes far beyond traditional prototypes. Product Managers can now demonstrate exact behavior and not just visuals. Engineering receives a living reference implementation, reducing ambiguity and accelerating implementation.

Why This Changes Everything

1. Faster Alignment

A functional POC removes interpretation. Engineering interacts with the intended flow, logic, and edge cases.

2. Shorter Development Cycles

Because the POC already expresses behavior and integrations, engineering focuses on architecture, performance, security, and scalability, not deciphering requirements.

3. Less Rework

Misunderstandings surface early and can be corrected instantly.

4. Stronger Cross-Functional Collaboration

Design, engineering, and stakeholders align around a working model instead of static text.

5. Faster Innovation

Teams validate ideas in hours instead of weeks.

Customer Value: Better Understanding, Clearer Needs, Faster Response

One of the most powerful outcomes of moving from PRDs to Vibe-built POCs is how it transforms the way we learn from and respond to our customers.

Instead of translating customer conversations into static documents, Product Managers can now convert insights into live, interactive prototypes within hours. Customers click through real flows, test logic, and experience intended functionality first-hand. This turns discovery into an immediate, dynamic validation loop.

This shift unlocks three major advantages:

1. More Well-Qualified Customer Needs

When customers react to real behavior instead of abstract descriptions, their feedback becomes sharper and far more actionable.

Instead of: “We think this could work…”

We hear: “This specific flow solves our exact pain.”

2. Clear, Unambiguous Requirement Transfer

With a functional POC embodying real logic, the original customer intent is preserved all the way from discovery to engineering. There is no translation gap - engineering receives precise, validated requirements grounded in what customers actually experienced.

3. Faster Iteration With Real Users

When a customer identifies a gap or new need, PMs can update the POC and deliver a revised version on the same day. This collapses the feedback loop from weeks to hours and allows us to respond with speed, accuracy, and confidence.

Grounding customer discovery in functional prototypes ensures every requirement is validated, aligned, and tied directly to customer value. This makes Eve faster, more precise, and more customer-obsessed than ever.

A Cultural Shift in Product Ownership

Moving from PRD to POC isn’t simply a tooling update, It is a mindset evolution.

Product Managers shift from writing documents to building interactive, functional experiences. They test logic early, validate flows with customers, and hand engineering a refined, proven concept.

The entire organization benefits from this shared clarity and tighter collaboration.

The Future of Product Development

Vibe Coding hasn’t just accelerated our workflow - it has redefined it. What once required extensive documentation and multiple rounds of interpretation now begins with a working proof-of-concept.

The product vision is no longer described. 

It is demonstrated.

POC-first development is becoming the new standard - and we’re ahead of the curve.

Closing: Building the Future, One POC at a Time

At Eve, Vibe Coding has unlocked new levels of speed, clarity, and customer understanding. Product Managers build and validate. Engineering scales and hardens. Customers see value sooner than ever.

This is the future of product development - and we’re proud to be defining it.