Writing Effective RFCs: Drive Technical Decisions Through Clear Proposals

What Is an RFC in Engineering?

An RFC (Request for Comments) is a written proposal that describes a technical change, invites structured feedback from stakeholders, and drives toward a decision. In engineering organizations, RFCs are the primary mechanism for making significant technical decisions transparently, ensuring that the right people have input, and creating a durable record of why decisions were made.

Unlike casual design discussions or Slack threads, an RFC forces the author to think rigorously about the problem, propose a concrete solution, consider alternatives, and anticipate objections. The document format creates accountability and thoroughness that verbal discussions rarely achieve. For tech leads, mastering the RFC process is essential for driving alignment at scale.

Why RFCs Are the Tech Lead's Most Powerful Tool

RFCs scale your influence beyond the meetings you attend. A well-written RFC can align twenty engineers across four teams without requiring a single synchronous meeting. It gives everyone time to read, think, and respond thoughtfully rather than reacting in real time. The asynchronous nature of RFC review produces better feedback because people have time to consider implications that they would miss in a live discussion.

RFCs also democratize technical decisions. Junior engineers who might not speak up in an architecture meeting with senior staff can write detailed comments on an RFC at their own pace. This surfaces perspectives and concerns that would otherwise be lost, and it gives emerging technical leaders a platform to demonstrate their thinking.

In my career, the engineering organizations that shipped the most reliably and had the fewest "Why did we build it this way?" moments were the ones with strong RFC cultures. The upfront investment in writing and reviewing proposals pays for itself many times over by preventing costly mistakes and misaligned implementations.

How to Write an Effective RFC

1. Start with the Problem, Not the Solution

The most common RFC mistake is jumping to the proposed solution without establishing why the problem matters. Spend the first section making the reader feel the problem. What is broken? Who is affected? What is the cost of inaction? If the reader does not agree the problem is worth solving, they will not engage meaningfully with your proposed solution.

2. Structure for Clarity

Use a consistent template across your organization. A proven structure includes: Summary (one paragraph), Problem Statement, Proposed Solution, Alternatives Considered, Trade-offs and Risks, Migration Plan, Open Questions, and Timeline. This structure ensures thoroughness and makes RFCs easy to navigate. Reviewers know exactly where to find the information they care about.

3. Describe Alternatives Honestly

For every viable alternative, explain its strengths and why you did not choose it. Do not strawman alternatives to make your proposal look better. Reviewers will notice, and it undermines trust in your analysis. The best RFCs make reviewers say, "I can see why the other options were reasonable, and I agree the proposed approach is the best trade-off." That level of objectivity is what separates persuasive technical writing from advocacy.

4. Be Explicit About Trade-offs

Every technical decision involves trade-offs. Name them directly. "This approach prioritizes development speed over runtime performance. We accept 50ms additional latency in exchange for shipping three weeks sooner." Explicit trade-offs show maturity and give reviewers concrete points to evaluate rather than vague concerns. They also create a record that future engineers can reference when re-evaluating the decision.

5. Include a Migration Plan

For any change that affects existing systems, describe how you will get from the current state to the proposed state. What is the rollback strategy? How will you handle the transition period? What is the impact on other teams? Migration plans are often the weakest section of RFCs, and they are where the most implementation problems hide. A thorough risk assessment of the migration will strengthen this section.

6. Set a Review Deadline

An RFC without a deadline collects comments indefinitely without reaching a decision. Set an explicit review period, typically five to ten business days. After the deadline, the author addresses feedback, makes a final decision, and updates the RFC status to Accepted or Rejected. This time-boxing prevents the analysis paralysis that afflicts many engineering organizations.

An RFC is not about getting permission. It is about making the best possible decision by leveraging the collective intelligence of your engineering organization.

RFC Template

Building an RFC Culture

Introducing RFCs requires leading by example. Write the first several RFCs yourself. Make the process lightweight enough that it does not feel like bureaucracy but thorough enough that it produces better decisions. Celebrate good RFCs publicly. When an RFC prevents a costly mistake, point it out to the team. Over time, engineers will internalize the habit of writing before building, and the quality of your team's technical decisions will improve measurably.

Encourage your team to write RFCs as a growth exercise. For mid-level engineers aiming to level up, writing and defending an RFC is one of the best ways to develop architecture discussion skills and strategic thinking.