SaaS & Business Software Glossary

A way for software applications to communicate with each other. In SaaS, API integrations allow tools like your CRM, email platform, and accounting software to share data automatically without manual exports.

The value of subscription revenue normalized to a one-year period. A SaaS company with 100 customers paying $100/month has $120,000 ARR. Used to measure the health and scale of subscription businesses.

The total market value of investments a financial institution or advisor manages on behalf of clients. Used as a measure of scale in wealth management and fintech.

An insurance package that bundles general liability insurance and commercial property insurance at a discount. Most small businesses should start with a BOP rather than purchasing each policy separately.

The percentage of customers who cancel their subscription in a given period. Monthly churn of 2% means 2 out of every 100 customers leave each month. Low churn is a key indicator of product-market fit.

Software that helps businesses manage interactions with current and prospective customers. Core features include contact management, deal pipelines, email tracking, and activity logging. Examples: HubSpot, Salesforce, Pipedrive.

Insurance that covers losses from cyberattacks, data breaches, ransomware, and related incidents. Covers both first-party losses (to your business) and third-party claims (from customers whose data was compromised).

Email authentication protocols that prevent your domain from being used for phishing and spam. Properly configured DMARC, DKIM, and SPF records improve email deliverability and are often required by cyber insurers.

A third-party organization that legally employs workers on behalf of another company, handling local payroll, taxes, benefits, and compliance. EOR services like Deel allow businesses to hire internationally without establishing local legal entities.

Professional liability insurance that covers claims that your professional services or advice caused financial harm to a client. Essential for consultants, designers, marketers, accountants, and any service provider delivering professional deliverables.

Federal Deposit Insurance Corporation insurance protects bank deposits up to $250,000 per depositor per institution if a bank fails. Fintech banking apps (like Mercury and Relay) hold deposits at partner FDIC-insured banks.

A pricing model where a basic version of the product is free and advanced features require a paid subscription. HubSpot CRM and ClickUp are strong examples — the free tier is functional enough to be genuinely useful.

The strategy and plan a company uses to bring a product to market. In the SaaS context, GTM teams use tools like CRMs, email automation, and AI outreach platforms to identify, reach, and convert potential customers.

When an AI model generates text that sounds confident and fluent but contains factually incorrect information. A major limitation of all current large language models, requiring human review before publishing AI-generated content.

Health Insurance Portability and Accountability Act. US federal law governing the privacy and security of health information. SaaS tools used by healthcare providers must be HIPAA compliant, often requiring a signed Business Associate Agreement (BAA).

An AI model trained on vast quantities of text data to understand and generate human language. The technology behind ChatGPT, Claude, and Gemini. LLMs power most modern AI writing tools, chatbots, and code assistants.

The total revenue a business can expect from a single customer account over the entire relationship. LTV is compared to CAC (Customer Acquisition Cost) — a healthy SaaS business typically has LTV:CAC ratio of at least 3:1.

A security method requiring users to verify identity through two or more factors — typically a password plus a code from an authenticator app. MFA is now required by most cyber insurers and reduces breach risk by over 99%.

The predictable, recurring revenue a subscription business earns each month. MRR = number of paying customers × average revenue per customer. The foundational metric for SaaS business health.

A customer loyalty metric based on one question: 'How likely are you to recommend us to a friend?' Responses are scored 0–10; Promoters (9–10) minus Detractors (0–6) = NPS. Used to measure customer satisfaction and predict churn.

Software whose source code is publicly available for anyone to view, modify, and distribute. Many open-source tools (like WordPress) are free to use but require technical setup. Contrast with proprietary SaaS products.

The practice of crafting precise, well-structured instructions (prompts) to get higher-quality outputs from AI language models. Skilled prompt engineers can dramatically improve AI output quality without changing the model itself.

An AI technique that combines a language model with a retrieval system that fetches relevant documents before generating a response. RAG reduces hallucinations by grounding AI answers in specific, up-to-date source material.

A measure of the profitability of an investment. In SaaS: (Revenue gained – Cost of tool) / Cost of tool × 100. Email marketing consistently delivers the highest ROI of any digital marketing channel (~$36 per $1 spent).

A software delivery model where applications are hosted in the cloud and accessed via subscription, typically through a web browser. Examples: HubSpot, Slack, Salesforce, QuickBooks Online. Contrast with on-premise software installed locally.

An authentication standard that allows users to log in to multiple applications with one set of credentials. Enterprise SaaS tools offer SAML SSO integration with identity providers like Okta, Azure AD, and Google Workspace.

A contract defining the level of service a provider commits to — typically uptime guarantees (e.g. 99.9%), response times, and remedies if those levels aren't met. Enterprise SaaS contracts usually include SLAs.

An automated message sent from one application to another when a specific event occurs. Webhooks enable real-time data flow between tools — for example, when a deal closes in your CRM, a webhook can automatically create an invoice in your accounting software.