Software as a Service (SaaS) is a software delivery model in which applications are hosted in the cloud by a provider and accessed by customers over the internet, typically on a recurring subscription. Instead of purchasing a perpetual licence, installing software on local servers, and managing patches and upgrades internally, SaaS customers log in via a browser or mobile app and the provider handles all infrastructure, availability, security updates, and feature development. Salesforce, Microsoft 365, Slack, HubSpot, and Zoom are among the most recognisable SaaS products, but the model now covers virtually every category of business software.
Why Businesses Choose SaaS
The economics of SaaS are fundamentally different from on-premise software. Upfront capital expenditure is replaced by predictable monthly or annual operating expenditure. There is no hardware to procure, no server room to maintain, and no upgrade project requiring consultants and a weekend migration window. New employees are onboarded in minutes. The trade-off is that the organisation has less control over the infrastructure and release schedule — which is why data portability, uptime SLAs, and security certifications matter when evaluating a SaaS vendor.
SaaS Delivery Models
- Multi-tenant SaaS:All customers share a single application instance and database partition. This enables the provider to achieve economies of scale and push updates to all customers simultaneously. Most consumer and SMB SaaS is multi-tenant.
- Single-tenant or dedicated SaaS:Each customer runs on an isolated instance, offering greater customisation, data isolation, and compliance guarantees. Common in regulated industries like healthcare, finance, and government.
- Vertical SaaS:Industry-specific SaaS built for a narrow market — a SaaS platform for dental clinics, for legal firms, or for construction project management. Vertical SaaS can command higher prices because the product fits the workflow precisely.
Building a SaaS Product
For businesses looking to productise their own software — turning internal tools or a service into a revenue-generating SaaS — the technical requirements extend beyond the application itself. Multi-tenancy architecture, subscription billing infrastructure, usage metering, role-based access control, onboarding flows, and customer telemetry all need to be designed deliberately. Getting these foundations wrong early creates expensive re-architecture work later.
SaaS Development at Dictode
Dictode designs and builds custom SaaS platforms for startups and established businesses entering the software market. We architect for multi-tenancy, integrate with billing infrastructure like Stripe or Razorpay, and build the operational tooling — admin panels, customer analytics, and support integrations — that a SaaS business needs from day one. If you have a service business with a repeatable process, we can help you turn it into a product.