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Web and SaaS Development

Guides on web and SaaS delivery, white-label development for agencies and adding new features to existing web applications.

About this topic

These articles cover web applications and SaaS products: how agencies work with white-label development partners, how to extend an existing web product with new capabilities and what to expect from a development partner for client web projects.

They are written for agency owners, product managers and founders who need web work delivered predictably, with clear ownership of code, hosting and client communication.

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PSSoftware Partner SelectionWhite Label Web Development for Agencies: How to Choose a Delivery PartnerChoose a white-label web development partner for your agency using delivery scope, client boundaries, QA and a practical pilot project checklist.6 min read

30 articles

All Web and SaaS Development articles

WWeb and SaaS DevelopmentChoosing a Python Web Framework: Django, FastAPI, Flask and the AlternativesA practical comparison of Python web frameworks — Django, FastAPI, Flask, Litestar, Pyramid, Tornado, AIOHTTP and data-app tools — with selection criteria, typical use cases and architecture advice for 2026.6 min read

WWeb and SaaS DevelopmentReact, Angular or Vue? Choosing a Front-End Framework for a Long-Lived ProductA practical comparison of React, Angular and Vue for business applications: architecture, ecosystems, meta-frameworks, hiring, long-term maintenance and migration, with a decision matrix and examples.3 min read

WWeb and SaaS DevelopmentReact or Next.js? Choosing a Front-End Architecture in 2026React is a UI library; Next.js is a full-stack framework built on it. This guide compares rendering, routing, data fetching, hosting and team factors, explains the App Router and Server Components, and covers migration.6 min read

QAQA and Software TestingFrom AI-Generated Code to Maintainable Software: A Review and Quality FrameworkHow to keep AI-assisted development fast without losing quality: context engineering for coding assistants, risk-based review tiers, a review checklist, CI gates and the metrics that show whether it works.11 min read

ARArchitecture and ModernizationUsing AI to Reverse-Engineer Legacy Applications: From Screens and Code to a Modernisation PlanHow AI helps understand and rebuild legacy applications — documenting undocumented code, recovering business rules, generating UI from screenshots and tests from behaviour — with limits, verification steps and IP considerations.4 min read

ARArchitecture and ModernizationAPI-First Development: How to Make It Work, Not Just Say ItWhat API-first development really involves: contract design before code, parallel delivery, governance, versioning, security and testing — with a worked example, metrics and when API-first is not worth it.5 min read

ARArchitecture and ModernizationDesigning a CI/CD Pipeline: Stages, Quality Gates and Safe DeploymentHow to design a CI/CD pipeline that is fast and safe: continuous integration, delivery versus deployment, pipeline stages, quality and security gates, deployment strategies, rollback, metrics and a maturity path.3 min read

PDProduct Design and DiscoveryContext-Aware UI: Designing Interfaces That Adapt Without Confusing UsersHow to design context-aware interfaces that adapt to user role, task, device, location and time: useful patterns, the data they need, privacy and accessibility considerations, failure modes and how to test them.5 min read

PDProduct Design and DiscoveryDesignOps: Closing the Gap Between Design, Development and QAWhat DesignOps is, the problems it solves between design, development and QA, design systems and tokens, handoff and review practices, metrics, and a phased plan for teams of different sizes.6 min read

ARArchitecture and ModernizationA DevSecOps Checklist: Securing the Pipeline from Commit to ProductionA practical DevSecOps checklist covering code, dependencies, secrets, infrastructure as code, containers, the pipeline itself, deployment and runtime — with ownership, prioritisation and metrics.3 min read

$Software Costs and BudgetsBuilding an E-commerce Loyalty Programme That Pays for ItselfHow to design an e-commerce loyalty programme that changes behaviour profitably: programme types, reward economics with a worked example, technology options, fraud and privacy, and how to measure incremental value.4 min read

PDProduct Design and DiscoveryE-commerce Personalisation: Strategies That Lift Conversion Without Losing TrustPractical e-commerce personalisation strategies across the customer journey — search, recommendations, content, email, checkout and loyalty — with data foundations, privacy guardrails, testing methods and a phased plan.4 min read

ARArchitecture and ModernizationEvent-Driven APIs: Webhooks, Streams and Async Patterns That Hold Up in ProductionHow to design event-driven APIs: when to use webhooks, WebSockets, SSE or event streams, event contracts with CloudEvents and AsyncAPI, signing, retries, idempotency and ordering.8 min read

ARArchitecture and ModernizationGraphQL or REST? Choosing an API Style for Your ProductA practical comparison of GraphQL and REST: data fetching, performance, caching, versioning, errors, security and tooling, with a decision matrix, hybrid patterns and migration advice.5 min read

QAQA and Software TestingLoad Testing in Practice: Planning, Running and Learning from Performance TestsHow to plan and run load tests: types of performance tests, defining realistic workloads and targets, environments and data, tools, metrics to watch, analysing bottlenecks and making performance testing continuous.3 min read

ARArchitecture and ModernizationMACH Architecture or a Modular Monolith: How to DecideCompare MACH architecture with a modular monolith on team size, operations, integration cost and change frequency, with a scorecard and an evolution path.9 min read

PDProduct Design and DiscoveryOne-Page Checkout or Multi-Step? Designing and Testing a Checkout That ConvertsHow to choose between one-page and multi-step checkout, the design details that reduce abandonment, payment and security requirements, a QA checklist and how to A/B test checkout changes safely.4 min read

$Software Costs and BudgetsBudgeting an OTT MVP: Features, Devices and Operating CostsPlan an OTT streaming app budget: MVP scope, effort by module, device choices, DRM and video pipeline, CDN and store fees, and a 12-month operating cost model.11 min read

QAQA and Software TestingOWASP Top 10:2025 for Product Teams: What Changed and How to Test for Each RiskThe OWASP Top 10:2025 explained for product and QA teams: what changed since 2021, what each risk looks like in real applications, how to prevent it and how to test for it in your delivery pipeline.7 min read

PDProduct Design and DiscoveryProduct Discovery Frameworks: Which to Use, When and How They Fit TogetherA practical guide to product discovery frameworks — Jobs to Be Done, Design Thinking, Lean experiments, Opportunity Solution Trees, Business Model and Value Proposition Canvases, RICE — with when to use each and a two-week discovery plan.5 min read

AIAI and Machine LearningRecommendation Engines: Choosing Algorithms, Data and Metrics That WorkHow recommendation engines work and which algorithms to use — popularity, content-based, collaborative filtering, matrix factorisation, learning to rank, embeddings and LLMs — with data needs, cold start, evaluation metrics and a staged roadmap.4 min read

ARArchitecture and ModernizationSelf-Documenting APIs: Keeping Documentation True with OpenAPI, Code and CIWhat self-documenting APIs really are, how they relate to OpenAPI, code-first versus design-first, standard error formats, contract testing, documentation drift and a CI pipeline that keeps docs accurate.6 min read

ARArchitecture and ModernizationOne Codebase or Several? Sharing Code Across Web and Mobile Without RegretHow to decide how much code to share between web and mobile apps: fully shared UI, shared business logic with native UI, or separate codebases — with a decision matrix, monorepo practices and cost considerations.4 min read

QAQA and Software TestingTest Automation Frameworks: Architectures, Tools and How to ChooseThe main test automation framework architectures — linear, modular, library, data-driven, keyword-driven, hybrid and BDD — plus current tools for web, mobile and APIs, the test pyramid, CI integration and how to choose.3 min read

QAQA and Software TestingThreat Modeling for Product Teams: A Practical Process with STRIDEHow product teams can run threat modeling: the four key questions, data-flow diagrams, STRIDE, prioritising threats, turning mitigations into tests and stories, when to model, and a worked example.4 min read

PDProduct Design and DiscoveryUX Audits: How to Find and Fix the Usability Problems Costing You UsersWhat a UX audit covers, when to run one, a step-by-step process using analytics, heuristics, accessibility checks and user testing, how to prioritise findings and how often to repeat it.4 min read

ARArchitecture and ModernizationPlanning a Zero-Downtime Migration: Compatibility, Cutover and RollbackPlan a zero-downtime migration with a measurable definition, expand-and-contract schema changes, data reconciliation, staged cutover, go/no-go criteria and rollback.11 min read

LLMGenerative AI and LLMsHow to Add AI Features to an Existing Web or Mobile ApplicationAdd AI to an existing web or mobile application with clear integration boundaries, evaluations, fallback behavior and an incremental release plan.5 min read

PSSoftware Partner SelectionVietnam Development Partners for Digital Agencies: A ShortlistCompare Vietnam development partners for digital agencies by white-label delivery, communication, QA and client ownership before starting a pilot.6 min read

PSSoftware Partner SelectionWhite Label Web Development for Agencies: How to Choose a Delivery PartnerChoose a white-label web development partner for your agency using delivery scope, client boundaries, QA and a practical pilot project checklist.6 min read

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