Why companies choose GitLab

1. Single application

Replaces GitHub + Jenkins + Jira + Nexus

Instead of:

GitHub  → Source Code
Jenkins → CI/CD
Jira    → Project Tracking
Nexus   → Artifact Repository

You can use:

GitLab

Benefits

• One login
• One user management system
• One API
• Less integration work

2. Self-hosted & data control

You install GitLab on your own servers.

Your Server
    ↓
GitLab

Your code never leaves your organization.

Useful for

• Banks
• Government agencies
• Defense organizations
• Companies with strict compliance requirements

Air-gapped

Means no internet connection required.

Internet ❌

Internal Network
      ↓
GitLab

3. Built-in security (DevSecOps)

GitLab can automatically scan code for security issues.

SAST

Scans source code.

Source Code
    ↓
SAST
    ↓
Find insecure code

DAST

Scans running applications.

Running Website
      ↓
DAST
      ↓
Find security holes

Dependency Scanning

Checks third-party libraries.

Spring Boot App
      ↓
Log4j Vulnerability Found

Secret Detection

Finds passwords and API keys accidentally committed.

AWS_SECRET_KEY=xxxx
       ↓
Detected

No extra plugins needed.

4. Free & Open Source (CE)

CE = Community Edition

GitLab CE is free.

Cost = $0

You can host:

5 Users
50 Users
500 Users
5000 Users

without paying per user.

5. Native Kubernetes Support

GitLab works directly with Kubernetes.

Developer
    ↓
Git Push
    ↓
GitLab Pipeline
    ↓
Kubernetes

GitLab Agent

GitLab doesn’t push into the cluster.

Instead:

GitLab
   ↑
GitLab Agent
   ↑
Kubernetes Cluster

The cluster pulls updates securely.

This is called GitOps.

6. MR = CI + Review in One Screen

MR = Merge Request

When you open an MR, you see:

Code Changes
Pipeline Status
Security Results
Test Results
Coverage
Review Comments

all in one place.

Example:

Feature Branch
      ↓
Merge Request
      ↓
✓ Build Passed
✓ Tests Passed
✓ Security Scan Passed
✓ Approved
      ↓
Merge

No need to switch between multiple tools.

7. DORA Metrics Built In

DORA metrics measure DevOps performance.

Deployment Frequency

How often you deploy.

10 Deployments / Day

Lead Time

How long code takes to reach production.

Code Commit
      ↓
Production

Change Failure Rate

How many deployments fail.

100 Deployments
5 Failed

Failure Rate = 5%

MTTR

Mean Time To Recovery

How quickly you fix production issues.

Incident
    ↓
Fix

GitLab calculates these automatically from your pipelines and deployments.

DORA is a DevOps research framework that defines four key metrics — Deployment Frequency, Lead Time for Changes, Change Failure Rate, and Mean Time To Recovery (MTTR) — to measure software delivery performance and operational reliability.

One-line Summary

GitLab is popular because it combines source control, CI/CD, project management, security scanning, artifact storage, Kubernetes deployment, and DevOps metrics into a single self-hosted platform.