Glossary

Business Software Glossary

SSO, OAuth, SaaS, CRM and more — terms of the business software world, explained simply.

34 Terms

14 Letters

9 Languages

2

2FA / Two-factor authentication

Adding a second verification step beyond your password.

A

API

The language two pieces of software speak to each other.

ARR

Annual recurring revenue — the metric of subscription businesses.

C

Churn

The percentage of customers who cancel in a given period.

CRM

Manages customer relationships, opportunities, and history in one place.

E

e-Arşiv

An electronic invoice for customers without a tax stamp.

e-Defter

Keeping the journal and general ledger electronically and reporting to GIB.

e-Fatura

Electronic invoice between organizations with a tax stamp.

ERP

Software that manages all of a company's resources in a single system.

G

GIB

The Turkish Revenue Administration — the institution managing tax processes.

K

SMB / KOBI

Small and medium-sized businesses — 99% of Turkey's economy.

KPI

Key performance indicator — what a business actually does.

KVKK

Turkey's personal data protection law.

L

Low-code

Building complex software with a small amount of code.

LTV

Customer lifetime value — total revenue from a customer.

M

MFA

Multi-factor authentication — generalized 2FA.

MRR

Monthly recurring revenue — the pulse of SaaS.

Multi-tenant

A single software serving many customers in isolation.

N

No-code

Building software without writing any code — visual interfaces.

NPS

Net Promoter Score — customer satisfaction in one question.

O

OAuth

The standard behind the "Sign in with Google" button.

OKR

Objectives & Key Results — measurable team goals.

Onboarding

The first experience that introduces a user or employee to a system.

P

PaaS

Platform as a Service — Heroku, Vercel, etc.

POS

Point of sale — the terminal taking payment at a sale.

R

REST

The most common design pattern for web APIs.

Roadmap

A map showing where a product is heading.

S

SaaS

Software as a Service — accessed in the cloud, used by subscription.

SAML

An enterprise SSO standard, XML-based.

Sprint

A 2-week fixed-scope development cycle.

SSO

Single sign-on — log in once, access all systems.

Stand-up

A 15-minute daily team coordination meeting.

W

Webhook

An HTTP request automatically triggered by an event.

Workflow

The sequence of steps a task passes through.

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