Experiment Nation: The Podcast

Rommil from Experiment Nation

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Every week we share: - Interviews with the Best Conversion Rate Optimization (CRO) professionals and Experimenters from around the world - Conference sessions / Tutorials Recent recognition: - Top 10% of most followed Podcasts on Spotify experimentnation.substack.com

Jun 3

Your A/B Test Dropped Conversion 8% in 6 Days… Now What?

What do you do when an experiment tanks conversion rate by 8% in less than a week?In this episode, Gerda and Rommil break down real CRO and experimentation scenarios submitted by the community, including failed tests, executive pressure, guardrail metrics, knowledge management, developer friction, and why experimentation teams always seem to end up back in spreadsheets.Check out: http://katsed.com/We also discuss: * Root cause analysis for failed experiments * How to calm leadership during testing disasters * Guardrail metrics and control limits * Why experimentation knowledge banks become messy * Airtable vs spreadsheets vs enterprise tools * Why developers and designers struggle with experimentation culture * How to onboard technical teams into testing workflows A practical conversation for experimentation leads, growth teams, product managers, CRO specialists, and anyone building an experimentation culture.Chapters00:00 Burger Menu Debate: Left vs Right01:28 Mystery Meat Navigation & UX History03:03 Why Modern Phones Break UX05:08 Community CRO Scenarios Begin06:18 Experiment Tanks Conversion by 8%07:33 Root Cause Analysis & Leadership Pressure09:17 QA, Tracking Errors & Failed Tests10:03 Building a CRO Analysis Tool12:18 Probabilistic Root Cause Detection14:26 Managing Panic During Bad Experiments15:21 Guardrail Metrics Explained16:40 Using Control Limits in Experimentation18:18 Building an Experimentation Knowledge Bank20:05 Why You Don’t Need AI for Everything21:08 Why Process Changes Create Admin Pain23:08 Migrating Between Experimentation Tools24:31 Why Teams Always Go Back to Spreadsheets26:50 CRO Teams vs Developers & Designers29:09 Why Early Experiments Should Be Simple30:41 Why Developers Hate “Throwaway Code”32:16 Designers vs Experiment Constraints33:02 Outro & Next Community Questions This is a public episode. If you would like to discuss this with other subscribers or get access to bonus episodes, visit experimentnation.substack.com

33 min
Apr 17

S6E8 - AI vs Humans in Research… Who Actually Wins?

Most teams say they “do research”… but very few actually do it well.In this episode, we break down what real customer research looks like in CRO and growth. From analyzing 200+ survey responses manually, to why AI still struggles with qualitative data, to the politics that slow everything down.We also get into:Why AI fails at nuanced research (and what it misses)How to actually analyze open-ended survey responsesThe biggest mistakes teams make with surveysWhy companies avoid talking to customers (and why that’s a red flag)How research becomes a political nightmare in larger orgsWhen you should sample vs analyze everythingHow research fuels better marketing and personalizationAnd yes… we somehow end up talking about billion dollars and laundry.If you’re in CRO, growth, product, or marketing, this is the stuff people don’t usually say out loud.👇 Timestamps00:00 Why content actually drives opportunities03:15 What “research” really means04:00 How many responses you actually need06:00 Why AI fails at qualitative analysis07:30 When to sample vs analyze everything09:00 Using research for marketing copy10:00 Why not talking to customers is a red flag11:00 Survey politics and internal resistance13:30 Bad survey questions and bias16:00 Personalization vs CRO (what’s the difference?)22:30 Personalizing outreach properly26:30 Why research projects spiral out of control29:00 How to actually make research a habit31:00 How to ship research faster (timeboxing)34:00 “Business jiu-jitsu” and fake urgency35:30 Final thoughts (and laundry) This is a public episode. If you would like to discuss this with other subscribers or get access to bonus episodes, visit experimentnation.substack.com

37 min
Apr 1

S6E7 - Ways to destroy an experimentation culture

In this episode, we dive into the realities of CRO (Conversion Rate Optimization) today — from AI anxiety to experimentation culture and how teams should actually be structured. We start with a surprisingly philosophical take on photography and overthinking, then quickly shift into what’s really happening in the CRO and AI space right now. We discuss: * Why AI might be making everything look the same * The growing fear (and noise) around AI in CRO * How to structure CRO teams: centralized vs hybrid vs embedded * Why experimentation still struggles with a “nice-to-have” perception * What actually builds a strong experimentation culture * How individual contributors can influence culture without authority * And how to position CRO as a true growth engine, not just testing If you work in growth, product, or experimentation, this is a candid look at what’s changing and what actually matters. Chapters 0:00 – Photography, overthinking, and creative process1:26 – Back to CRO: what’s happening in the industry2:07 – AI concerns and job market anxiety2:45 – The “everything looks the same” AI problem4:00 – Too many AI tools, no real differentiation5:38 – What people are really asking about AI6:23 – AI fear vs reality (and layoffs)7:08 – Fear-mongering vs signal8:00 – Fear and decision-making9:00 – CRO team structures: centralized, hybrid, embedded9:31 – Why centralized works early10:08 – When to move to hybrid10:29 – Why embedded is hard11:04 – The role of leadership buy-in12:13 – Why experimentation gets cut first13:00 – CRO’s “nice-to-have” branding problem14:00 – Why CRO is easy to underestimate15:45 – Future-proofing: combine CRO with other skills16:54 – Building experimentation culture (the “laundry” analogy)18:19 – How to destroy experimentation culture19:23 – Why authority and buy-in matter20:25 – How ICs can influence culture21:34 – Reframing experimentation as empowerment23:09 – Becoming a catalyst across teams24:46 – Confidence and presence in CRO roles25:59 – CRO vs Growth: what’s the difference?27:24 – Where CRO fits inside growth teams28:02 – Moving CRO upstream into systems thinking29:00 – Closing thoughts This is a public episode. If you would like to discuss this with other subscribers or get access to bonus episodes, visit experimentnation.substack.com

30 min
Mar 27

S6E6 - The Uncomfortable Truth About AI, ROI, and CRO Careers

In this episode, we answer real, unfiltered questions from the CRO and experimentation community. We dig into how far AI can realistically help with experimentation, why revenue metrics like ARPU are a nightmare for MDE calculations, how to handle sketchy interview “audits,” and why ROI conversations never seem to end.No hype. No magic bullets. Just honest perspectives from people actually doing the work.Topics include: * Where AI helps (and quietly breaks) CRO workflows * How to think about MDEs for continuous metrics like ARPU * Making time for research when you’re already drowning * When “auditing a site” crosses into spec work * Volume hiring for CRO roles * Escaping (or not) the endless ROI loop * Why some CRO agencies don’t have designers Drop your own questions in the comments or check the links below to submit anonymously.- Ask us a question here: https://docs.google.com/forms/d/e/1FAIpQLSd8P5yCsO5NB6WPe204k1WExhH1Bs8w6nZxPRRn-BiAGozpaQ/viewform- Visit Koalatative here: https://www.youtube.com/@koalatative⏱️ Chapters00:00 – Intro & warm-up04:34 – How far can AI actually help in delivering CRO?11:19 – How do experimentation experts estimate MDE for continuous metrics like ARPU?15:28 – How do you make the most of research time when there’s no time to do anything?19:29 – How do you handle being asked to audit a site as part of a CRO interview?24:20 – How do you approach CRO in volume recruitment?28:21 – How do you get out of the endless ROI loop with stakeholders (and stop saying “CRO”)?31:46 – Why do some CRO agencies not have designers on the team?33:47 – Outro & announcements#cro #experimentation #abtesting #aiincro #growth #productmanagement #conversionrateoptimization #experimentationculture #careerintech #experimentationnation This is a public episode. If you would like to discuss this with other subscribers or get access to bonus episodes, visit experimentnation.substack.com

35 min
Mar 23

S6E5 - The Biggest Myths in A/B Testing (Why CRO Fails)

A real conversation about why A/B testing doesn’t magically fix broken businesses.We break down the biggest CRO myths, why copying case studies fails, how experimentation tools really get chosen, and what actually causes friction between CRO, UX, and research teams.For CROs, experimenters, product, growth, UX, and analytics leaders.1:38 The biggest myth in A/B testing3:00 The one-person CRO team fallacy4:34 Why copying tests never works10:44 Choosing an experimentation platform14:39 Working with “difficult” clients This is a public episode. If you would like to discuss this with other subscribers or get access to bonus episodes, visit experimentnation.substack.com

32 min
Mar 14

S6E4 - CRO, Burnout, and Finding Meaning in the Work

In this episode, we go off-script and cover everything from CRO strategy to existential questions.We talk through:How to recover after being shaken at workWhy long-form content still matters in experimentationCRO differences between B2B, SaaS, and ecommerceWhy website redesigns without A/B testing backfireHow beginners can gain real CRO experienceWhat it actually takes to get people to listen to dataAnd yes… the meaning of life (besides 42)This episode is less about “perfect answers” and more about how CRO, experimentation, and work actually play out in the real world.If you work in experimentation, product, growth, or analytics, this one will feel uncomfortably familiar.Chapters00:00 – How to recover after being shaken at workReflection, time, and physical reset after tough moments02:10 – End-of-year reflection and career resetsBurnout, misfit roles, and rediscovering intrinsic motivation04:25 – Why short-form content fails complex industriesAttention, doomscrolling, and why long-form still matters07:18 – Listener Q&A begins: CRO across business modelsB2B vs SaaS vs ecommerce testing realities12:02 – The hidden buyer problem in B2B CROResearchers vs decision-makers and misaligned incentives13:44 – Website redesigns without A/B testingPolitics, risk, and how to introduce testing anyway18:16 – How beginners can get real CRO experienceSide projects, free tools, and hands-on learning23:46 – The meaning of life (other than 42)Creating your own meaning rather than finding one26:58 – Getting people to listen to data at workInfluence, likability, and organizational dynamics31:24 – Culture fit, authority, and when to move onWhy sometimes it’s not you, it’s the environment32:23 – Wrap-up and next episode teaser This is a public episode. If you would like to discuss this with other subscribers or get access to bonus episodes, visit experimentnation.substack.com

33 min
Feb 14

S6E3 - AI Skeptics, CRO Burnout, and Toxic Bosses. Oh my

Koalatative's Gerda Thomas and Experiment Nation's Rommil Santiago answer questions from the CRO community.Chapters3:35 – Is there room in CRO for AI skeptics anymore?4:58 – How can I feel like I'm using my CRO skills for good?11:29 – AI is boring and speeding up the decline of civilization. Agree or disagree?15:22 – How do I tell my micromanaging manager to shut up?18:43 – Why are you the way that you are?23:48 – How do you share a complete story with clients so they actually hear both sides of the research?26:39 – How do you calculate ROI for my CRO program for a client?29:17 – When you have no ideas on what test to run where do you get ideas? This is a public episode. If you would like to discuss this with other subscribers or get access to bonus episodes, visit experimentnation.substack.com

35 min
Feb 8

S6E2 - CRO in 2025: Is the Industry Falling Apart? We Break It Down.

Koalatative's Gerda Thomas and Experiment Nation's Rommil Santiago answer CRO questions from the community.Chapters:1:51 – What's the one thing people on internet still refuse to automate or use AI for that you think they should?”5:07 – How do you measure the impact of your CRO program over time?10:37 – What to do when leadership has a win at all cost mentality, choosing short-term wins over long-term ones. How can a proper experimentation program thrive?15:27 – How should checks and balances happen in an organization on data integrity? Who should own those roles?20:10 – Should a testing tool have a warning that says, 'Your win rate is too high. Check your data type warning.'?22:49 – It seems like every day it gets harder to land a quality job in CRO with some of my colleagues taking up to a year to bounce back from a layoff. Is it worth joining the field anymore? This is a public episode. If you would like to discuss this with other subscribers or get access to bonus episodes, visit experimentnation.substack.com

29 min

5

out of 5

2 Ratings

Every week we share: - Interviews with the Best Conversion Rate Optimization (CRO) professionals and Experimenters from around the world - Conference sessions / Tutorials Recent recognition: - Top 10% of most followed Podcasts on Spotify experimentnation.substack.com

Creator

Rommil from Experiment Nation
Years Active

2020 - 2026
Episodes

181
Rating

Explicit
Copyright

© Experiment Nation
Show Website

Experiment Nation: The Podcast