Side Hustle Glossary

60+ business and income terms defined and explained for side hustle beginners and entrepreneurs.

ROI - Return on Investment - the profit or loss made relative to the amount invested, expressed as a perce...
MRR - Monthly Recurring Revenue - predictable income that comes in every month from subscriptions or retai...
ARR - Annual Recurring Revenue - the yearly value of recurring revenue, typically MRR × 12.
CPM - Cost Per Mille (thousand) - the price paid per 1,000 impressions or subscribers in advertising.
LTV - Lifetime Value - the total revenue expected from a customer over their entire relationship with your...
CAC - Customer Acquisition Cost - the total cost to acquire a new customer, including marketing and sales ...
Retainer - A recurring fee paid monthly for ongoing services, providing predictable income for service provider...
Arbitrage - Profiting from price differences between markets - buying low in one place and selling high in anoth...
Dropshipping - Selling products without holding inventory - suppliers ship directly to customers on your behalf.
POD - Print on Demand - products are printed only when ordered, eliminating inventory risk.
UGC - User-Generated Content - content created by regular people rather than brands, used in marketing.
SaaS - Software as a Service - software delivered via subscription over the internet.
API - Application Programming Interface - allows different software systems to communicate with each other...
SEO - Search Engine Optimization - improving content to rank higher in search results.
Niche - A specialized segment of the market with specific needs that you can serve better than generalists.
Funnel - The journey customers take from awareness to purchase, often visualized as a narrowing path.
Lead Magnet - Free valuable content offered in exchange for contact information to build an email list.
Conversion Rate - The percentage of visitors who take a desired action (purchase, signup, etc.).
Passive Income - Income that requires minimal ongoing effort to maintain after initial setup.
Scalable - A business model that can grow revenue without proportionally increasing costs or effort.
MVP - Minimum Viable Product - the simplest version of a product that can be released to test the market.
Bootstrap - Building a business with personal savings and revenue, without external funding.
Affiliate - Earning commission by promoting other companies\
Evergreen - Content or products that remain relevant and valuable over time, not tied to trends.
White Label - Products or services made by one company but rebranded and sold by another as their own.
Side Hustle - A job or business pursued in addition to full-time employment, typically to earn extra income. Popul...
Financial Freedom - Having enough passive income or savings to cover all living expenses without relying on active emplo...
SMMA - Social Media Marketing Agency - a service business that manages social media accounts, advertising, ...
Vibe Coding - Using AI coding assistants like Cursor, GitHub Copilot, and Claude to build software products withou...
FBA - Fulfillment by Amazon - a service where sellers send products to Amazon warehouses and Amazon handle...
KDP - Kindle Direct Publishing - Amazon\
High-Ticket - Products or services priced at $1,000 or more, typically offering higher profit margins per sale.
Solopreneur - An entrepreneur who runs a business entirely by themselves, often leveraging automation and digital ...
Multiple Income Streams - Earning money from several different sources simultaneously. The average millionaire has 7 income st...
E-E-A-T - Experience, Expertise, Authoritativeness, and Trustworthiness - Google\
Digital Nomad - A person who works remotely while traveling, typically earning income from online businesses, freela...
Prompt Engineering - The skill of crafting effective instructions for AI models to produce desired outputs. An emerging c...
CTR - Click-Through Rate - the percentage of people who click on a link or ad out of total impressions.
ROAS - Return on Ad Spend - revenue generated per dollar spent on advertising.
Churn - The rate at which customers cancel subscriptions or stop doing business.
Recurring Revenue - Income from subscriptions or retainers that repeats on a regular schedule.
Content Marketing - Creating valuable content to attract and engage an audience, driving profitable customer action.
Influencer - A person with significant online following who can affect purchase decisions.
Brand Deal - A paid partnership between a brand and content creator.
Fulfillment - The process of receiving, packing, and shipping orders to customers.
Profit Margin - The percentage of revenue remaining after all costs are deducted.
Market Research - Gathering and analyzing data about target customers, competitors, and market opportunities.
Sales Funnel - The step-by-step process that guides potential customers from awareness to purchase.
Email List - A collection of email addresses from people who opted in to receive marketing communications.
Landing Page - A standalone web page designed for a specific marketing campaign or conversion goal.
A/B Testing - Comparing two versions of content or design to determine which performs better.
Organic Traffic - Visitors who find your website through unpaid search results.
Monetization - The process of converting an audience, skill, or asset into revenue.
Virtual Assistant - A remote worker who provides administrative, creative, or technical support to businesses.
Compound Interest - Earning returns on both original investment and accumulated interest, a core wealth-building mechani...
AI Agent - An autonomous AI system that can execute multi-step tasks on your behalf — browsing the web, sending...
SDR - Sales Development Representative — a role focused on outbound prospecting, lead qualification, and b...
OpenClaw - The most popular open-source AI agent of 2026 (247K+ GitHub stars). Self-hosted, works through messa...
MCP - Model Context Protocol — a standard for connecting AI models to external tools, APIs, and data sourc...
Content Repurposing - Taking one piece of content (video, podcast, article) and adapting it into multiple formats for diff...