AI Is Moving up the Software Lifecycle: From Code Review to PRD Governance

Large technology companies are expanding the use of artificial intelligence beyond code generation and code review into earlier stages of the software development lifecycle, including product requirement validation and system design inputs. Recent initiatives from Uber, DoorDash, and Cloudflare illustrate a shift toward using AI as a governance layer that evaluates and refines engineering artifacts before implementation and during review.

Uber has introduced a first pass PRD approach in which AI systems review product requirement documents before they reach engineering teams. The system evaluates clarity, completeness, and potential execution risks in early-stage specifications. 

According to Uber's engineering commentary on the initiative, 

Such a great use case for AI PMs! Most people assume the value is in co-drafting the PRD with you, but the bigger value is adding the right context to help you think through the problem, bringing in relevant company-wide sources and projects you might not even know about. 

The approach positions AI as a structured review mechanism for product documentation rather than a coding assistant. In Uber’s workflow, AI is introduced early in the requirements phase to surface missing dependencies, inconsistencies, and unclear assumptions before design and implementation. Engineers retain final validation authority, while the AI system serves as an initial filtering layer for PRDs.

DoorDash has taken a similar direction with an internal AI-powered code reviewer designed to provide feedback that engineers actively incorporate into their workflow. The system focuses on producing actionable and context-aware suggestions rather than generic automated comments. In commentary on the system,

 DoorDash engineers noted that

The team designed it to earn trust, not create noise: fewer comments, more useful feedback, and real behavior change before code ships.

The design integrates AI-generated insights directly into existing development workflows, surfacing feedback within standard review processes rather than as a separate tool. This approach reduces review latency while preserving engineering judgment as the final decision point, aiming to improve throughput without increasing low-signal noise for engineers.

Cloudflare has also described a multi-agent approach to AI-assisted code review, where different AI components are assigned specialized responsibilities such as security analysis, performance evaluation, and correctness checks. This decomposition mirrors distributed systems principles by separating concerns across multiple agents and aggregating outputs through a coordination layer. 

Cloudflare engineering notes that

specialized agents outperform a single general-purpose reviewer when each is tightly scoped in responsibility.

Cloudflare also emphasizes precision in what the system flags, noting that defining what not to surface is as important as defining what to detect to maintain high-signal reviews and reduce noise in developer workflows.

Across these implementations, AI is applied across the software lifecycle from requirements to implementation as a first-pass evaluation layer that supports human reviewers. It introduces structured checkpoints at PRD, design, and code review stages, adding automated analysis while preserving human oversight. This reflects an emerging model of continuous validation across software artifacts.