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T-Minus-15

A KnowAll AI methodology · open source

Launch every sprint. Without the explosions.

T-Minus-15 is the delivery playbook for teams of humans and AI agents. Plan, Prep, Design, Engineer, Test, Operate — fifteen steps to a controlled, predictable launch, with an agent alongside every role and people firmly in charge.

Sprint clockand counting

T-minus 15: fifteen steps to launch

What is T-Minus-15?

Your team's mission-control checklist.

Thousands of books will tell you about Agile and DevOps. T-Minus-15 tells you what to do tomorrow morning: the roles you need, how to estimate, which meetings matter, the metadata on every work item — the nuts and bolts, battle-tested over twenty years of real projects.

Why the name? Rocket launches count down in T-minus, and every launch here takes fifteen steps: three calls in each of Plan, Prep, Design, Engineer and Test, then lift-off. Boom — T-Minus-15.

AssembleOnce, before the first countdown: the crew of humans and agents forms, then the loop starts at T-15 and repeats every sprint.

  1. Plan

    1. T-15Target
    2. T-14Size
    3. T-13Schedule
  2. Prep

    1. T-12Gather
    2. T-11Define
    3. T-10Prioritise
  3. Design

    1. T-9Sketch
    2. T-8Map
    3. T-7Architect
  4. Engineer

    1. T-6Build
    2. T-5Review
    3. T-4Merge
  5. Test

    1. T-3Verify
    2. T-2Harden
    3. T-1Accept
  6. Operate

    1. T-0Launch
    2. T+Monitor
    3. ↺Repeat
  • Small, controlled launches

    Not one big, terrifying launch that might explode — a predictable lift-off at the end of every sprint, fifteen steps at a time.

  • One continuous loop

    Dev and Ops are one team on one infinity loop. Feedback from every launch fuels the next countdown.

  • Humans and agents, one crew

    Every role has an AI teammate that knows the playbook. Agents do the heavy lifting; people make the calls.

The countdown: fifteen calls from plan to lift-off

  1. Plan: Plotting the course

    1. T-15Target

      Agree one goal with the client: the thing that makes this sprint a success.

      Poppie drafts the sprint goal from the roadmap and last sprint's feedback.

    2. T-14Size

      Estimate the work in front of you and check it against who's actually available, people and agents alike.

      Poppie totals the estimates against the crew's capacity and flags overload early.

    3. T-13Schedule

      Pull in what fits the launch window, and nothing it merely hopes to. The rest waits for the next countdown.

      Poppie lays out the sprint board and pencils in the launch date.

    Delivery LeadPoppie the Planner
  2. Prep: Decoding the client's wants and needs

    1. T-12Gather

      Get the lowdown from the people who'll use it: interviews, workshops, and the spreadsheet everyone secretly relies on.

      Preppie turns meeting transcripts into a first cut of the requirements.

    2. T-11Define

      Turn needs into personas, epics, features and user stories, each with acceptance criteria you could actually test.

      Preppie drafts stories and acceptance criteria for the analyst to sharpen.

    3. T-10Prioritise

      Order the backlog by value with the product owner, so the crew always works on what matters most.

      Preppie spots gaps, duplicates and stories that aren't ready to build.

    Business AnalystPreppie the Prepper
  3. Design: Crafting UX that doesn't suck

    1. T-9Sketch

      Rough ideas on the whiteboard, where changing your mind costs nothing.

      Dannie mocks up screen options in minutes, not days.

    2. T-8Map

      User journeys and wireframes, on brand, walked through with real users and signed off.

      Dannie checks every screen against the brand guidelines.

    3. T-7Architect

      Data, integrations and security decided before a line is built, so the edge cases get argued on paper.

      Archie drafts the solution design and reviews it for risk.

    UX Designer & ArchitectDannie & Archie
  4. Engineer: The art of engineering

    1. T-6Build

      Small branches and clean code, with humans and agents building side by side.

      Ernie writes code and tests on a branch, never straight to main.

    2. T-5Review

      Every pull request is reviewed before it lands: a person decides, with agents as a second pair of eyes.

      Ernie and Archie review pull requests for bugs and design drift.

    3. T-4Merge

      Merged, built by the pipeline and deployable. Finish what you start before starting something new.

      Ernie keeps the build green and the branches short-lived.

    EngineerErnie the Engineer
  5. Test: Raising the bar

    1. T-3Verify

      Every story checked against its acceptance criteria, with the repetitive checks automated.

      Teddie writes and runs end-to-end tests straight from the acceptance criteria.

    2. T-2Harden

      Security and performance tested before the release meets real traffic, not after.

      Pennie probes for weaknesses while Teddie load-tests the release.

    3. T-1Accept

      The client tries it, the important stories pass, and they sign it off. All systems go.

      Teddie prepares a short UAT plan anyone on the client's team can follow.

    TesterTeddie the Tester
  6. Operate: Shipping value, not just code

    1. T-0Launch

      Released through the pipeline. An anti-dramatic launch, because the drama happened in testing.

      Ollie runs the release pipeline and writes release notes people actually read.

    2. T+Monitor

      The mission clock keeps running: monitoring, support and feedback from real users.

      Ollie watches the telemetry and raises issues before users notice them.

    3. T-15Repeat

      Feedback lands in the backlog, the crew holds a retro, and the next countdown begins at T-15.

      Ollie feeds incidents and usage data back into the backlog for planning.

    Operations EngineerOllie the Operator

Assemble your crew

Humans in charge. Agents alongside.

T-Minus-15 is human-centric — it's about people collaborating better. So every role on the squad gets an AI teammate that has read the playbook: it drafts, checks, chases and reviews, while the human owns the decision. Think co-pilot, not autopilot.

  • Human

    Delivery Lead

    Priorities, stakeholders and the launch timeline

    Poppie the Planner avatar
    Agent

    Poppie the Planner

    Plans Epics, tracks the sprint and keeps the crew in sync

  • Human

    Business Analyst

    Understanding the client and what "done" means

    Preppie the Prepper avatar
    Agent

    Preppie the Prepper

    Drafts user stories, acceptance criteria and probing questions

  • Human

    UX Designer

    The experience, the brand and the trade-offs

    Dannie the Designer avatar
    Agent

    Dannie the Designer

    Sketches wireframes and keeps the UI on-brand

  • Human

    Solution Architect

    The architecture and the hard technical calls

    Archie the Architect avatar
    Agent

    Archie the Architect

    Reviews code and designs against best practice

  • Human

    Engineer

    The code, the craft and the pull request

    Ernie the Engineer avatar
    Agent

    Ernie the Engineer

    Implements stories and reviews every PR

  • Human

    Tester

    The quality bar and the go/no-go

    Teddie the Tester avatar
    Agent

    Teddie the Tester

    Writes test plans and runs end-to-end checks

  • Human

    Operations Engineer

    Releases, uptime and the 3am pager

    Ollie the Operator avatar
    Agent

    Ollie the Operator

    Watches pipelines, deployments and monitoring

  • Human

    Security Specialist

    Risk appetite and sign-off

    Pennie the Pen Tester avatar
    Agent

    Pennie the Pen Tester

    Probes the deployed app for OWASP-style holes

Workshops

Train the crew before the countdown.

Hands-on sessions for the whole delivery team, run by the people who wrote the playbook: a methodology workshop for every stage of the countdown, technology sessions in any order, and a two-hour briefing for the leaders running many crews.

Methodology

  • W-M0

    Assemble: The Avengers of Agile

    Assemble a cross-functional squad — humans and agents — that actually delivers.

  • W-M1

    Plan: Plotting the course

    Sprint goals, honest estimates and a launch window you can actually hit.

  • W-M2

    Prep: Decoding the client's wants and needs

    Epics, features and stories with acceptance criteria you can test.

  • W-M3

    Design: Crafting UX that doesn't suck

    Wireframes, brand guidelines and architecture before code.

  • W-M4

    Engineer: The art of engineering

    Branching, pull requests, clean code and finishing what you start.

  • W-M5

    Test: Raising the bar

    Test plans, automation and quality gates that catch bugs on the pad.

  • W-M6

    Operate: Shipping value, not just code

    Release pipelines, monitoring and the feedback loop.

Technology

Any order
  • W-T1

    Azure DevOps

    Boards, repos and pipelines set up the T-Minus-15 way.

  • W-T2

    Dataverse vs SharePoint vs SQL

    Pick the right data store before it picks you.

  • W-T3

    Power Platform, incl. Code Apps

    Low-code where it helps, real code where it counts.

  • W-T4

    CI/CD

    Build and release pipelines that make launch day boring.

  • W-T5

    Agentic coding

    Put AI agents to work in your repo — with humans firmly in charge.

Leadership

Two hours
W-L1

Mission Control: The Gnostic Enterprise

Scaling T-Minus-15 across many teams, one topic per chapter of The Gnostic Enterprise: from agile squads and super employees to a Centre of Excellence and security by design.

Want the full agenda? The workshop deck covers all three tracks.

Cover of T-Minus-15: Secrets of an elite DevOps team by Ben Weeks

The book

T-Minus-15: Secrets of an elite DevOps team

By Ben Weeks

The field guide behind the methodology. Informal, opinionated and allergic to theory: team roles that work in the real world, estimates that don't waste your time, meetings that don't make you want to cry, and a 15-step plan for rolling it all out — with a little help from some AI sidekicks along the way.

  • Free and open source

    Read the whole thing on GitHub under Creative Commons (CC BY-SA 4.0). Share it with your clients — they are on the crew too.

  • Written in the open

    Spot something? Send a pull request. Land around 25 meaty ones and you can become a co-author.

  • Written for humans, read by agents

    Every chapter was written for people first. Now the same pages brief the T-Minus-15 agents, so the crew and its AI teammates work from one shared playbook.

T-15 · Your countdown starts here

Ready for lift-off?

Whether it's a workshop for your squad, questions about the book, or a crew to deliver alongside you — tell us where you're headed and we'll help you get there, fifteen steps at a time.

What are you enquiring about?

Your message is sent as an encrypted Nostr DM — no email servers involved.

  1. 1We read every enquiry ourselves — no ticket queue.
  2. 2A short call to understand your team, your stack and your timeline.
  3. 3A proposal for workshops or delivery, sized to fit.