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Strategy and SaaS model

Business model and strategy concepts behind a SaaS.

11 terms

Illustration of the SaaS model: cloud software accessed by many customers paying a recurring subscription.

SaaS

SaaS (Software as a Service) is the model where software is delivered over the cloud and billed by recurring subscription, instead of sold as a one-time installed license. It is multi-tenant, meaning a single codebase serves many customers, and it updates continuously. This model turns one-off sales into recurring revenue and is what makes metrics like MRR, churn and NRR central.

Illustration of a MicroSaaS: a small, focused software product serving a specific niche, run by one person.

MicroSaaS

MicroSaaS is a lean, niche software as a service, run by a very small team, often a single person, and almost always bootstrapped. It trades massive scale for focus: it solves one specific, well-defined problem, with high margins and low fixed costs. Success depends on a niche with real pain, a clear ICP and a product that is simple to maintain.

Illustration of bootstrapping: a company growing from its own revenue, with no outside funding.

Bootstrapping

Bootstrapping is growing a company with your own resources and revenue from customers, without raising outside capital from funds or angel investors. It trades speed for control: there is no dilution, decisions stay with the founders and cash discipline is higher. It requires reaching healthy unit economics early, because the runway is your own revenue.

Illustration of a moat, or competitive moat, protecting a SaaS business from the competition.

Moat

A moat (competitive moat) is the structural advantage that protects a company from being copied and sustains its margins over time. In SaaS, the most common types are network effects, switching costs, brand, scale and proprietary data. A wide moat shows up in the metrics as high retention and strong NRR.

Illustration of network effects: connected users forming a network that grows in value as new nodes join.

Network effects

Network effects happen when each new user increases the value of the product for everyone else, creating a loop where more value attracts more users who generate even more value. They can be direct, when users interact on the same network, or indirect, when one side of the market attracts the other. They are one of the strongest moats a SaaS can have, because they get harder to copy as the network grows.

Illustration of ARR per employee: a small team sustaining a large total of annual recurring revenue.

ARR per employee

ARR per employee is ARR divided by the number of employees. It measures the capital efficiency and productivity of a SaaS: how much recurring revenue each person sustains. It rises as the company scales and automates, and it is one of the health signals investors watch alongside the Rule of 40.

Illustration of a minimum viable product: a lean version with the core feature ready and the rest still to be built.

MVP

An MVP (Minimum Viable Product) is the smallest version of a product that already delivers the core value and lets you learn from real users. It is not a broken product: it is the minimum that already solves the problem and tests the main hypothesis before you invest in the full product. It is the tool that shortens the learning loop and guides the search for product-market fit.

Illustration of a service level agreement: a contract with uptime, response time and penalty targets.

SLA

An SLA (Service Level Agreement) is the contractual commitment between a SaaS vendor and the customer about service quality: guaranteed uptime, support response time and the penalties or credits owed if the targets are missed. It gives the customer predictability, is decisive in enterprise deals and becomes a selling point. It differs from the SLO, the internal target, and the SLI, the indicator actually measured.

Illustration of uptime: a service available over time, measured as a percentage of availability.

Uptime

Uptime is the percentage of time a service is available and working over a period. It is usually expressed in "nines": 99% allows about 3.65 days of downtime per year, 99.9% about 8.8 hours and 99.99% about 52 minutes. It is the heart of an SLA and a direct driver of trust and retention.

Illustration of the white-label concept: a generic product receiving another company's brand before reaching the end customer.

White-label

White-label is a product that one company develops but another resells under its own brand, delivering it to its customers as if it were its own. It is a distribution channel: the maker gains reach and revenue through partners and agencies, while the reselling brand offers a ready-made solution without building it from scratch. The cost is less contact with the end customer and less control over the brand.

Illustration of a growth flywheel spinning: happy customers, referrals, cheap acquisition and reinvestment in a loop.

Flywheel

The flywheel, or growth flywheel, is a model in which each gain feeds the next and builds momentum that eventually spins almost on its own: happy customers drive referrals, which lower the cost of acquisition and free up revenue to reinvest in the product, which creates more happy customers. Unlike the funnel, which ends at the sale, the flywheel puts retention and referral at the center of growth.