42
Navigation guide

The Starmap

The answer is always 42. The hard part is knowing
what question you are actually asking.

This is the complete map of the youPersonic build journey — 24 chapters across 5 acts, one weekend at a time. Chapter 0 is live. Every card that follows is a destination already plotted. The route is the point.
Mission status
24
Chapters
5
Acts
1
Live
~218K
Words
Live
Writing next
Plotted, not yet built
I
Act 1
Foundation
Ch 0–3 · ~40K words
▼

Write once, write well. These chapters do not document a build weekend — they establish the lens through which every build weekend is understood. Read these first. Come back to them often.

Chapter 0
Live
Why This Book Exists
The observation, the conviction, the invitation. The founding statement of the platform.
philosophyfoundation
Chapter 1
Live
Ch 1: The Platform Blueprint — Seven Capabilities
What the platform must fundamentally be capable of. Seven layers. Seven questions. The architecture that makes every downstream decision accountable.
architecturecapability layers
Chapter 1a
Live
The 400k-Token Stress Test
Every capability layer under maximum load. A group compliance officer. A decade of audit logs. How the platform survives.
resiliencesimulation
Chapter 1b
Live
Regulatory Traceability Matrix
Every requirement mapped to its regulatory source. MAS. IMDA. MindForge. The document a regulator requests first.
MAS . IMDA compliance
Chapter 2
Writing Next
The Open-Source Stack
Every technology choice as a deliberate decision against a proprietary alternative. The ADR behind each component.
open-sourceADR
Chapter 3
Coming
Build to Learn
Why building is the primary learning mechanism. The weekend cadence. How to read this book and build alongside it.
philosophymethodology
II
Act 2
Platform
Ch 4–11 · ~60K words
▼

One build weekend. One chapter. No retrospective polish — written in the voice of the moment, failures included. You earn the spend.

Data Gravity — us-east-1
Persists here
YugabyteDB · pgvector · Redis · MinIO · Keycloak
Compute Gravity — us-west-1
Executes here
EKS · Bedrock → Ollama → NIM · Agent runtimes
Chapter 4
Write now
Weekend 1 — The Site Is Live
ACM · S3 · CloudFront · Route53 · aws-vault · MFA. The entire delivery chain validated for $0.51/month.
AWSsecurityinfra
Chapter 5
Coming
Weekend 2 — The Build Pipeline
GitLab CI/CD · Docusaurus blog · auto-deploy on push. The discipline of never touching the console again.
GitLabCI/CDDocusaurus
Chapter 6
Coming
Weekend 3 — Data Gravity Region
VPC · EKS · RDS PostgreSQL · pgvector · Redis · Keycloak. The persistent layer built first.
us-east-1data sovereignty
Chapter 7
Coming
Weekend 4 — Making Agents Think
AWS Bedrock · first LangChain agent · FastAPI endpoint. One config line from Bedrock to NIM.
BedrockLangChainFastAPI
Chapter 8
Coming
Weekend 5 — The Workflow Engine
Temporal on EKS · first durable workflow · Maker-Checker pattern. Every step recorded, replayable, auditable.
Temporalworkflowaudit
Chapter 9
Coming
Weekend 6 — Compute Gravity Region
Second VPC · Transit Gateway · first GPU spot instance · Ollama. The separation of forces made real.
us-west-1GPUTransit Gateway
Chapter 10
Coming
Weekend 7 — RAG: Teaching Agents to Remember
pgvector · embeddings pipeline · RAG-enabled agents. Citations in every answer, by design.
RAGpgvectorembeddings
Chapter 11
Coming
Weekend 8 — MinIO and the Object Layer
MinIO on EKS · S3-compatible API · document storage. The same boto3 code, no vendor required.
MinIOobject storageS3-compatible
III
Act 3
Agents
Ch 12–16 · ~68K words
▼

The platform is built. Now it thinks. Five use cases, each a complete chapter — not a tutorial, a working system.

Chapter 12
Coming
The Agent Framework
LangGraph · CrewAI · Temporal — three layers, one stack. When to use each, and why they are not competing.
LangGraphCrewAITemporal
Chapter 13
Coming
Use Case 1 — Fraud Detection
7 parallel agents · sub-100ms · graph analytics · Decision Fusion. The hardest real-time problem first.
primaryreal-timeLangGraph
Chapter 14
Coming
Use Case 2 — Credit Risk Assessment
8 underwriting agents · NLP on bank statements · alternative data for thin-file applicants.
primaryNLPCrewAI
Chapter 15
Coming
Use Case 3 — Regulatory Reporting
6 collection agents · XBRL generation · 96% automation. Not AI magic — reliable automation of a known process.
secondaryregulatoryautomation
Chapter 16
Coming
Use Case 4 — Bank-Wide Compliance
8 monitoring agents · 24/7 · 60% auto-remediation. Long-running agents require a different design philosophy.
secondaryAMLmonitoring
IV
Act 4
Production
Ch 17–20 · ~32K words
▼

Running a platform is different from building one. The fifth use case lives here — last not because it is least, but because everything it needs already exists by the time you arrive.

Chapter 17
Coming
Monitoring — Seeing Everything
Prometheus · Grafana · OpenTelemetry. Every agent decision observable. Cost per inference calculated.
observabilityGrafanaPrometheus
Chapter 18
Coming
Cost Optimisation — Earning Your GPU
$0.51 → $150 → $500 → $1,500. The graduation path with real numbers. When to spend and when to wait.
costGPU spotBedrock
Chapter 19
Coming
Security Hardening
IAM least privilege · secrets management · audit trails · zero-trust between agents. Compliance by architecture.
securityIAMzero-trust
Chapter 20
Coming
Disaster Recovery
Data region is source of truth. Compute region is stateless. DR is asymmetric by design.
DRresilienceRTO
V
Act 5
Reflection
Ch 22–24 · ~18K words
▼

The answer was always 42. These chapters are about understanding what question was actually being asked — and what the answer actually cost.

Chapter 22
Coming
What Worked, What Failed, What It Costs
Every architectural decision revisited honestly. Real costs vs estimates. What would be done differently.
honest accountingretrospective
Chapter 23
Coming
Prompts Are Code — The CI/CD Pipeline
Two-track deployment · Agenta · Track A fast path · Track B full pipeline. The BETA-PROD question, finally answered.
LLMOpsprompt CI/CDAgenta
Chapter 24
Coming
What Comes Next
pgvector → Milvus · Bedrock → Ollama → NIM. Every upgrade path documented with its trigger condition.
roadmapupgrade paths