API
Application Programming Interface

CSS
Cascading Style Sheets

HTML
Hypertext Markup Language

HTTP
Hypertext Transfer Protocol

HTTPS
Hypertext Transfer Protocol Secure

JSON
JavaScript Object Notation

XML
eXtensible Markup Language

SQL
Structured Query Language

CRUD
Create, Read, Update, Delete

OOP
Object-Oriented Programming

IDE
Integrated Development Environment

SDK
Software Development Kit

MVC
Model-View-Controller

VPN
Virtual Private Network

AJAX
Asynchronous JavaScript and XML

UI
User Interface

UX
User Experience

CSS3
Cascading Style Sheets Level 3

ES6
ECMAScript 6 (or ECMAScript 2015)

NPM
Node Package Manager

DOM
Document Object Model

REST
Representational State Transfer

SOAP
Simple Object Access Protocol

TDD
Test-Driven Development

CI/CD
Continuous Integration/Continuous Deployment

BaaS
Backend as a Service

PaaS
Platform as a Service

IaaS
Infrastructure as a Service

SaaS
Software as a Service

GIT
Global Information Tracker (or simply a version control system)