12.7 Index

A subject index of key concepts and the chapters that cover them. Terms are defined in the Glossary (chapter 12.1).

A

A/B testing: 2.13, 7.4, 8.6
accessibility: 1.1, 1.6, 1.7, 1.12, 1.13, 2.1, 2.4, 2.8, 2.11, 2.16, 3.1, 3.17, 4.6, 5.1, 5.2, 5.3, 5.5, 5.6, 5.7, 5.8, 5.10, 10.5, 10.7, 10.9, 10.14, 11.1, 11.2
agile: 1.4, 1.13, 2.1, 2.2, 2.4, 2.8, 2.9, 2.12, 2.19, 4.9, 7.7, 8.5, 10.1, 10.6, 10.7, 10.8, 10.14, 10.15, 11.3, 11.6
API: 1.5, 2.3, 2.6, 2.7, 2.9, 2.20, 3.1, 3.2, 3.5, 3.6, 3.8, 3.11, 3.12, 3.13, 3.14, 3.15, 3.16, 4.1, 4.2, 4.7, 4.8, 4.9, 5.7, 6.1, 6.6, 6.9, 7.3, 7.9, 8.4, 8.5, 9.1, 9.2, 9.3, 9.6, 9.7, 10.13, 11.5
API gateway: 2.3, 3.2, 3.6, 3.13, 3.16
architecture decision record: 1.5, 1.6, 2.2, 3.11, 3.14, 10.4, 10.9
autoscaling: 3.5, 3.11, 8.3, 9.1, 9.4, 9.7

B

blameless: 1.1, 1.11, 2.11, 2.13, 2.15, 4.1, 4.4, 7.2, 7.8, 9.1, 9.3, 9.6
blue-green: 8.1, 8.6, 11.2
BM25: 3.17
bounded context: 3.2, 3.4
build cache: 8.7

C

cache: 2.2, 2.13, 2.16, 2.17, 2.21, 3.4, 3.5, 3.13, 3.14, 3.15, 3.17, 5.6, 6.6, 7.6, 8.7, 9.1, 9.6, 9.7
canary: 3.16, 8.1, 8.6, 11.2
capacity planning: 2.13, 3.5, 3.14, 3.15, 3.16, 6.2, 9.1, 9.2, 9.3, 9.7, 11.3
CDN: 3.4, 3.13, 3.15
chaos engineering: 3.5, 9.5, 9.6, 9.8
CI/CD: 3.2, 4.4, 5.7, 6.2, 7.2, 8.1, 8.4, 8.6, 8.7, 11.2, 11.3
circuit breaker: 2.20, 3.3, 3.13, 9.6
code review: 1.2, 1.7, 1.10, 1.13, 2.1, 2.5, 2.9, 2.11, 2.13, 2.19, 3.1, 3.2, 4.1, 4.9, 4.10, 6.4, 6.9, 8.1, 10.4
compliance: 1.1, 1.2, 1.4, 1.5, 1.6, 1.7, 1.12, 2.1, 2.2, 2.3, 2.4, 2.5, 2.6, 2.7, 2.8, 2.9, 2.10, 2.13, 2.14, 2.19, 2.20, 2.21, 3.2, 3.3, 3.4, 3.6, 3.7, 3.8, 3.11, 3.12, 3.13, 3.14, 3.15, 4.1, 4.2, 4.3, 4.4, 4.5, 4.6, 4.7, 4.8, 4.9, 4.10, 5.1, 5.2, 5.4, 5.5, 5.6, 5.8, 5.10, 6.1, 6.2, 6.9, 7.1, 7.3, 7.4, 7.6, 8.1, 8.2, 8.3, 8.4, 8.5, 8.6, 8.7, 9.2, 9.4, 9.5, 9.6, 10.2, 10.3, 10.5, 10.6, 10.7, 10.8, 10.9, 10.11, 10.12, 10.13, 10.14, 10.16, 10.17, 10.18, 11.1, 11.2, 11.4, 11.6
configuration management: 2.10, 8.2, 8.7
containers: 2.21, 3.1, 3.11, 4.3, 4.7, 8.3
content delivery: 3.4, 3.13, 3.15
continuous delivery: 2.6, 2.10, 3.2, 4.4, 6.2, 8.1, 8.5, 8.6, 8.7, 10.17, 11.2
Conway’s Law: 1.2, 3.2, 5.9, 10.17
cost of delay: 10.10, 10.14, 10.15, 11.6
CQRS: 3.2, 3.12

D

data governance: 7.1, 7.8, 7.9, 9.2
data mesh: 7.1
data visualisation: 5.10, 7.3
dependency: 1.2, 1.4, 1.7, 1.9, 2.2, 2.4, 2.5, 2.9, 2.10, 2.13, 2.14, 2.18, 2.20, 3.1, 3.2, 3.3, 3.5, 3.6, 3.7, 3.11, 3.13, 3.15, 3.16, 3.17, 4.1, 4.2, 4.4, 4.6, 4.9, 4.10, 5.6, 5.7, 5.9, 6.4, 7.8, 8.1, 8.3, 8.4, 8.6, 8.7, 9.5, 9.6, 9.8, 10.1, 10.2, 10.3, 10.4, 10.6, 10.7, 10.9, 10.11, 10.12, 10.13, 10.16, 10.18, 11.6
design system: 5.1, 5.2, 5.3, 5.4, 5.10
DevSecOps: 4.4
Diátaxis: 2.7
Domain-Driven Design: 2.2, 3.2, 3.4, 3.6, 3.12
DORA: 1.10, 10.7, 10.8, 11.2, 11.3, 11.4, 11.5, 11.6

E

embedding: 3.17, 4.9, 5.1, 6.3, 6.6, 6.9, 7.3, 10.12, 10.17
encryption: 1.7, 1.9, 2.8, 3.13, 3.14, 3.16, 4.1, 4.3, 4.5, 4.8, 7.1, 8.2, 8.5, 9.5, 10.11
error budget: 7.8, 8.6, 9.1, 9.2, 9.8, 11.5
estimation: 1.4, 3.7, 10.6, 10.10, 10.15, 11.6
event sourcing: 3.2, 3.12
experimentation: 5.8, 6.2, 6.8, 7.1, 7.2, 7.4, 7.5, 7.6, 7.7, 8.1, 9.6, 10.4, 11.1, 11.2, 11.5

F

feature flag: 2.6, 3.6, 8.6
FedRAMP: 3.11, 4.6
FinOps: 3.11, 8.3, 9.4, 9.7, 10.10
fitness function: 1.6, 3.1, 11.1
formal methods: 2.12, 2.21

G

GDPR: 4.5, 4.6, 7.1, 7.4, 10.5, 10.11
GitOps: 8.2
gradual typing: 2.21

H

hallucination: 6.3, 6.8

I

incident: 1.1, 1.2, 1.6, 1.10, 1.11, 1.13, 2.6, 2.7, 2.9, 2.10, 2.11, 2.12, 2.13, 2.15, 2.16, 2.17, 2.18, 2.20, 2.21, 3.1, 3.2, 3.3, 3.4, 3.5, 3.8, 3.10, 3.11, 3.12, 3.13, 3.14, 3.15, 3.16, 3.17, 4.1, 4.2, 4.3, 4.4, 4.7, 4.8, 4.9, 4.10, 5.8, 6.1, 6.2, 6.3, 6.5, 6.6, 6.7, 6.9, 7.1, 7.2, 7.6, 7.8, 8.1, 8.2, 8.3, 8.5, 8.6, 8.7, 9.1, 9.2, 9.3, 9.4, 9.5, 9.6, 9.7, 9.8, 10.2, 10.3, 10.4, 10.8, 10.10, 10.12, 11.1, 11.2, 11.3
InnerSource: 1.2, 10.13, 10.18
inverted index: 3.17

K

Kanban: 1.4, 10.7, 11.3
Kubernetes: 4.3, 4.9, 8.2, 8.3

L

Little’s Law: 10.6, 10.7, 11.3, 11.6

M

maintenance: 1.1, 1.5, 1.7, 2.1, 2.3, 2.4, 2.6, 2.7, 2.9, 2.14, 2.18, 2.19, 3.6, 3.7, 3.8, 3.9, 3.10, 3.11, 3.14, 3.16, 4.2, 4.3, 5.2, 5.5, 5.6, 5.7, 5.10, 6.1, 6.2, 6.4, 7.2, 7.3, 7.6, 8.4, 8.5, 8.6, 8.7, 10.3, 10.4, 10.10, 10.12, 10.14, 10.18, 11.1, 11.2
master data management: 7.1, 7.9
maturity model: 1.1, 1.2, 1.3, 1.4, 1.5, 1.6, 1.7, 1.8, 1.9, 1.10, 1.11, 1.12, 1.13, 2.1, 2.2, 2.3, 2.4, 2.5, 2.6, 2.7, 2.8, 2.9, 2.10, 2.11, 2.12, 2.13, 2.14, 2.15, 2.16, 2.17, 2.18, 2.19, 2.20, 2.21, 3.1, 3.2, 3.3, 3.4, 3.5, 3.6, 3.7, 3.8, 3.9, 3.10, 3.11, 3.12, 3.13, 3.14, 3.15, 3.16, 3.17, 4.1, 4.2, 4.3, 4.4, 4.5, 4.6, 4.7, 4.8, 4.9, 4.10, 5.1, 5.2, 5.3, 5.4, 5.5, 5.6, 5.7, 5.8, 5.9, 5.10, 6.1, 6.2, 6.3, 6.4, 6.5, 6.6, 6.7, 6.8, 6.9, 7.1, 7.2, 7.3, 7.4, 7.5, 7.6, 7.7, 7.8, 7.9, 8.1, 8.2, 8.3, 8.4, 8.5, 8.6, 8.7, 9.1, 9.2, 9.3, 9.4, 9.5, 9.6, 9.7, 9.8, 10.1, 10.2, 10.3, 10.4, 10.5, 10.6, 10.7, 10.8, 10.9, 10.10, 10.11, 10.12, 10.13, 10.14, 10.15, 10.16, 10.17, 10.18, 11.1, 11.2, 11.3, 11.4, 11.5, 11.6
microservices: 1.2, 2.3, 3.2, 3.3, 3.6, 3.12, 3.16, 8.3, 8.6, 9.2, 10.4
MLOps: 6.1, 6.2, 6.7, 6.8
monorepo: 1.6, 2.6, 2.14, 8.7
mutual TLS: 3.2, 3.13, 3.16, 4.7

N

north star: 7.4

O

observability: 1.2, 1.13, 2.15, 2.16, 2.17, 2.20, 3.1, 3.3, 3.5, 3.7, 3.12, 3.13, 3.14, 3.15, 3.16, 3.17, 4.5, 6.2, 6.6, 6.7, 6.8, 7.1, 7.2, 7.6, 7.8, 7.9, 8.1, 8.3, 8.4, 8.6, 9.1, 9.2, 9.3, 9.6, 9.7, 9.8, 10.8, 11.2
OKR: 10.1, 10.14, 11.1, 11.4, 11.5
on-call: 1.1, 1.3, 1.10, 1.11, 1.12, 1.13, 2.7, 2.15, 2.20, 3.2, 3.11, 3.12, 3.14, 3.15, 3.16, 7.2, 7.6, 7.8, 8.2, 8.4, 8.5, 9.1, 9.2, 9.3, 9.6, 9.8, 10.4, 10.8, 11.3
OpenTelemetry: 9.2
OWASP: 1.7, 2.18, 3.10, 3.14, 4.1, 4.2, 4.9, 5.7, 6.3, 6.4, 6.7, 6.8, 6.9, 10.8

P

pair programming: 1.13, 2.5, 6.4, 10.7
penetration testing: 4.2, 4.4, 4.10
plain language: 1.8, 3.9, 3.17, 5.4, 7.4, 7.5, 7.7, 9.6, 10.15, 10.16, 11.1, 11.4
policy as code: 4.3, 8.2, 8.5, 11.2
postmortem: 1.1, 2.13, 2.15, 7.1, 7.2, 7.8, 8.6, 9.1, 9.3
privacy: 2.4, 2.8, 2.15, 3.1, 3.14, 4.1, 4.5, 4.6, 4.7, 4.8, 5.4, 5.7, 5.8, 5.9, 6.1, 6.2, 6.5, 6.6, 6.8, 6.9, 7.1, 7.2, 7.4, 8.2, 9.2, 10.2, 10.3, 10.5, 10.7, 10.9, 10.11, 10.13, 10.18
progressive delivery: 3.16, 8.1, 8.6, 11.2
prompt engineering: 6.9
prompt injection: 6.3, 6.7, 6.8, 6.9

Q

quality attributes: 2.8, 2.11, 3.1, 3.11, 11.1
queueing theory: 2.13, 9.7, 10.6, 10.7, 10.15, 11.3

R

RAG: 3.17, 6.1, 6.3, 6.9
red team: 4.10
refactoring: 2.1, 2.2, 2.4, 2.9, 2.19, 2.21, 3.2, 3.4, 3.7, 6.4, 8.6, 10.4, 10.7
reference data: 7.7, 7.9
reliability: 1.1, 1.2, 1.10, 2.1, 2.3, 2.4, 2.11, 2.12, 2.13, 2.15, 2.20, 3.1, 3.5, 3.11, 3.12, 3.14, 3.15, 6.2, 6.6, 7.2, 7.8, 8.1, 8.2, 8.3, 8.4, 8.5, 8.6, 8.7, 9.1, 9.2, 9.3, 9.4, 9.5, 9.6, 9.7, 9.8, 10.1, 10.2, 10.4, 10.8, 10.10, 10.16, 11.1, 11.2, 11.3, 11.5
requirements: 1.1, 1.2, 1.3, 1.6, 1.7, 1.8, 1.9, 2.1, 2.2, 2.4, 2.5, 2.8, 2.9, 2.10, 2.11, 2.12, 2.14, 2.17, 2.18, 2.21, 3.1, 3.2, 3.4, 3.5, 3.7, 3.9, 3.10, 3.11, 3.12, 3.13, 3.14, 3.15, 3.17, 4.1, 4.2, 4.3, 4.4, 4.5, 4.6, 4.8, 4.9, 4.10, 5.4, 5.6, 5.10, 6.1, 6.2, 6.3, 6.4, 6.5, 6.6, 7.1, 7.2, 7.3, 7.5, 7.7, 8.1, 8.2, 8.3, 8.4, 8.5, 8.7, 9.1, 9.2, 9.4, 9.5, 10.5, 10.6, 10.7, 10.14, 10.18, 11.1, 11.6
retrospective: 1.4, 10.7, 10.14, 11.4
reuse: 2.9, 3.7, 3.13, 3.15, 4.3, 4.8, 5.3, 5.4, 5.5, 5.8, 6.2, 6.4, 7.3, 8.5, 8.6, 10.3, 10.12, 10.18, 11.5
reverse proxy: 3.13, 3.15, 3.16
RFC: 1.1, 1.5, 1.7, 3.13, 3.15, 4.7, 4.8
risk register: 10.2, 10.6
RTO: 3.5, 9.5, 10.2

S

SBOM: 2.10, 2.18, 4.2, 4.9, 8.7, 10.2, 10.3, 10.12
Scrum: 1.4, 1.13, 10.7
search: 1.7, 1.13, 2.1, 2.7, 2.15, 3.1, 3.2, 3.4, 3.11, 3.14, 3.17, 4.4, 5.4, 5.5, 5.6, 5.8, 6.1, 6.3, 6.6, 6.7, 6.8, 7.6, 9.8, 10.3
secrets management: 4.2, 4.8
semantic search: 3.17
service level objective: 9.1, 9.2, 11.5
service mesh: 3.2, 3.13, 3.16
shift-left: 2.4, 4.1, 4.9
sidecar: 3.2, 3.13, 3.16
SLSA: 2.18, 4.2, 8.7
SMART: 1.8, 3.13, 3.16, 4.7, 6.7, 10.1, 11.1, 11.4
SOLID: 1.8, 2.2, 3.7, 5.10, 6.4, 6.8, 8.5, 10.7
static analysis: 1.7, 2.4, 2.9, 2.11, 2.20, 2.21, 3.2, 3.7, 3.10, 4.2, 6.4, 8.1
STRIDE: 4.1, 4.9
supply chain: 2.10, 2.18, 4.2, 4.6, 4.9, 5.3, 7.7, 8.3, 10.3, 10.9, 10.11, 10.18

T

technical debt: 1.5, 1.10, 2.2, 2.18, 2.19, 3.6, 5.5, 6.2, 8.5, 9.1, 10.7, 10.10
test automation: 8.5, 11.2
threat modelling: 4.1, 4.2, 4.9
toil: 1.10, 2.15, 3.11, 6.7, 8.1, 8.4, 8.5, 9.1, 9.8, 11.2
total cost of ownership: 1.5, 1.6, 1.7, 1.8, 1.9, 1.10, 1.12, 2.2, 2.8, 2.9, 2.10, 2.11, 2.12, 2.13, 2.14, 2.15, 2.16, 2.17, 2.18, 2.19, 2.21, 3.1, 3.2, 3.8, 3.9, 3.10, 3.11, 3.12, 3.15, 3.16, 3.17, 4.2, 4.3, 4.4, 4.5, 4.6, 4.7, 4.8, 4.9, 4.10, 5.1, 5.7, 5.8, 5.9, 6.1, 6.2, 6.7, 6.8, 7.1, 7.6, 7.7, 7.8, 7.9, 8.1, 8.6, 8.7, 9.1, 9.2, 9.4, 9.5, 9.6, 9.7, 10.1, 10.2, 10.3, 10.4, 10.5, 10.6, 10.7, 10.8, 10.9, 10.10, 10.11, 10.12, 10.13, 10.14, 10.15, 10.16, 10.17, 10.18, 11.1, 11.2, 11.3, 11.4, 11.5
traceability: 1.7, 2.4, 2.5, 2.6, 2.8, 2.10, 2.19, 3.9, 3.10, 3.12, 8.7, 10.14, 10.16
trunk-based development: 2.6, 8.1, 10.7, 10.17, 11.2
type inference: 2.21
type system: 2.21

U

UML: 2.12
utilisation: 1.2, 1.4, 1.9, 3.5, 3.11, 6.6, 8.3, 9.4, 9.7, 10.10, 11.3, 11.6

V

value stream: 11.6
vector database: 6.6
vector search: 3.17, 6.6
velocity: 1.1, 1.4, 1.10, 1.11, 1.12, 1.13, 2.2, 2.6, 2.9, 2.18, 2.19, 3.2, 3.14, 5.2, 6.4, 7.4, 8.3, 9.1, 10.1, 10.2, 10.3, 10.5, 10.6, 10.7, 10.11, 10.14, 10.15, 11.1, 11.5

W

WCAG: 1.7, 1.12, 2.8, 4.6, 5.1, 5.2, 5.3, 5.7, 5.10, 10.5, 11.1
WSJF: 10.1, 10.10, 11.6

Z

zero-trust: 1.9, 3.16, 4.1, 4.8