Blog · Delivery notes

Notes from the delivery side.

Practical writing on partners, commercial models, product architecture and industry software — aimed at people who buy and run projects, not at keyword theatre.

Writing since
2020
Guides on this page
48
People on the team
50+
Domains we cover
8+

Articles

Usable pieces you can share with a stakeholder before a kickoff call.

Showing 48 articles

01

MCP servers are dependencies: allowlist and scope them like production integrations

Model Context Protocol servers reach trackers, databases and cloud consoles for coding agents. Treat each server as a credentialed dependency — allowlist, least privilege, review — before you call it productivity.

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02

Treat AGENTS.md as a delivery contract before you scale coding agents

Repository instruction files tell agents — and partners — how your codebase actually works. What to put in AGENTS.md, what to leave out, and how to review it like a living delivery contract.

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03

Adding AI to healthcare software without skipping clinical checkpoints

Copilots and summarisation in clinical-adjacent products need audit logs, role gates and suggest-do-not-decide defaults — how to ship a safe first AI slice.

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04

Build vs buy for healthcare client and care-ops systems

When off-the-shelf scheduling and care-ops tools bend, when a client-owned custom slice wins, and how to scope the first integration-heavy release.

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05

Why client-owned repositories matter in software partnerships

Who holds the git remote, cloud account and deploy keys decides whether you can exit a vendor cleanly. How to insist on ownership without slowing delivery.

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06

Treat VPN and firewall portals like production apps

Remote-access and edge management UIs are hunted like production apps. Patch cadence, MFA, least privilege and logging for VPN and firewall portals that product and ops teams actually run.

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07

Image upload features are security features

Avatars, documents and thumbnails pull native converters into your trust boundary. Allowlists, pinning, sandboxing and update policy for media libraries so upload features do not become RCE features.

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08

Harden GitHub Actions before AI multiplies your PRs

AI and contractors raise merge volume. Pipeline identity, short-lived cloud credentials, least privilege workflows and third-party Action review so CI stays trustworthy when PR count spikes.

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09

Treat decode and compression paths as trust boundaries

Untrusted Brotli, SVG, cache and image bytes can become RCE on official runtimes. Patch windows, edge rejection, isolated decode workers and tests that prove you updated.

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10

Unmanaged AI agents are an insider risk you already have

Shadow agents on laptops hold API keys and internal reach with no owner. Inventory, secrets scope, spend caps and approval gates for AI tools teams already run — before you call them productivity.

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11

Cost of building a custom multi-tenant SaaS platform with AWS infrastructure

What actually drives build and run cost for a multi-tenant SaaS on AWS — tenancy, billing, integrations, environments — and how to get a quote that survives contact with scope.

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12

Three Index: your AI-first software development partner — not an investment fund

Three Index is a software company in Ahmedabad. How we differ from three-index investment search results, what we build, and where to find services and case studies.

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13

Agent-ready cloud: identity and spend controls before autonomy

As agents provision and operate cloud resources, undocumented exceptions break. How to make environments legible with non-human identity, approval gates and FinOps caps.

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14

Software supply chain hygiene for product teams

Dependency risk, SBOM expectations and poisoned packages are buying criteria now. Practical supply chain controls that fit delivery teams without freezing every upgrade.

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15

Zero trust for SaaS products teams actually ship

Zero trust is moving from architecture slides to insurance and customer requirements. Practical identity, least privilege and continuous verification patterns for multi-tenant products.

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16

Platform engineering: golden paths product teams will actually use

Self-service environments, CI and deploy rails are becoming table stakes. How to build an internal platform that speeds delivery without forcing every squad to invent DevOps from scratch.

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17

Agentic AI features need human checkpoints before production

Enterprise software is embedding multi-step agents, not just copilots. How to design autonomy tiers, tool permissions and audit trails so agent features help users without creating silent failures.

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18

Vibe coding without a review can shut the product down

A non-technical founder can publish an AI-built app that looks finished. Without an audit, an outsider can expose the gaps, and the product — and the money behind it — has to come down.

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19

When AI speeds up coding, delivery systems become the bottleneck

AI coding tools raise change volume. Why CI, review, testing and platform golden paths matter more than raw generation speed — and how to buy delivery help that keeps pace.

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20

What to prepare before briefing an MVP

A practical checklist that makes your first conversation with a development team dramatically more useful.

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21

Fixed price vs dedicated development team

When a fixed-scope project is the right model — and when a dedicated team will waste less money.

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22

How to choose a software development partner in India

Practical checks for evaluating an offshore or nearshore software partner — beyond slide decks and bench size claims.

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23

Scoping software without endless change orders

How to write inclusions, exclusions and decision rules so change control does not become the whole project.

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24

Software estimates that survive contact with reality

Why precise-looking estimates fail, and how to communicate ranges, assumptions and unknowns without theatre.

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25

Paying down technical debt without stopping the roadmap

A pragmatic approach to refactoring, platform risk and feature delivery so debt work is planned — not postponed forever.

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26

Building production web apps that outlast the launch

What matters after choosing React or Next.js: auth, data boundaries, environments and ownership that keep apps alive.

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27

Mobile app MVP: native or cross-platform?

A decision guide for early mobile products — when native wins, when cross-platform is enough, and what to validate first.

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28

Cloud cost control for growing products

Practical DevOps habits to keep AWS and cloud bills predictable as traffic and environments multiply.

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29

Adding AI features to existing products without the hype

Where AI helps inside real workflows, what to evaluate first, and how to ship assistive features safely.

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30

Data pipelines that ops teams actually trust

Building reliable ingestion, transformation and reporting so operators stop keeping shadow spreadsheets.

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31

API design for partner integrations that do not wake you at night

Versioning, auth, webhooks and error contracts that keep partner integrations stable as both sides ship.

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32

SaaS multi-tenancy decisions that stick

Tenancy models, isolation, billing hooks and admin realities for multi-tenant products that grow past the first customers.

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33

B2B UI/UX that busy operators will actually use

Design habits for internal tools and operator products — density, defaults and feedback that respect people under time pressure.

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34

WordPress vs custom: when to choose which

A clear split between content sites that fit WordPress and product workflows that need a custom application.

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35

Onboarding a dedicated development team without losing a month

Access, rituals and decision rights that get a dedicated squad productive in weeks — not after a long fog of kickoff decks.

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36

Healthcare software beyond the chart UI

Workflow, auditability and integration realities for healthcare products that must fit clinical and ops teams.

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37

Real estate listing portals that scale past the first catalogue

Search, media, agent workflows and data quality patterns for listing portals that grow with inventory.

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38

Food ordering platforms: designing for ops reality

Menus, fulfilment states and peak-load habits for ordering products that restaurants and riders can actually run.

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39

POS and inventory for multi-location operators

Stock accuracy, offline resilience and location-level reporting for POS systems that span more than one store.

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40

Fintech ops dashboards without the theatre

Building financial operations views that reconcile, alert and explain — not just look like a Bloomberg tribute.

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41

Headless CMS: when it helps and when it is ceremony

Choosing headless content architecture for multi-channel products without inventing complexity you will not staff.

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42

Social app backends: feeds, moderation and scale basics

Feed design, abuse handling and growth-stage architecture for social products before celebrity-scale problems arrive.

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43

Marketing campaign workspaces for teams that ship weekly

Briefs, assets, approvals and calendars in one workspace so campaigns stop living across five tools and a group chat.

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44

RAG and GenAI inside business software

Grounded generation patterns for product features — retrieval, permissions and evaluation without science-project sprawl.

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45

Observability before you need an incident

Logs, metrics and traces that answer user-impact questions — set up before the first painful outage teaches the lesson.

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46

Migrating legacy systems without a big bang

Strangler patterns, dual-run and cutover habits that move users safely off legacy platforms.

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47

Security habits in software delivery

Practical security practices for product teams — secrets, dependency hygiene and review that fit delivery cadence.

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48

Avoiding vendor lock-in without building everything

How to use cloud and SaaS wisely — escape hatches, data export and abstraction where it pays, not cargo-cult portability.

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Topics we cover

Delivery and buying, product platforms, and industry software patterns that survive real ops.

01

Delivery & buying

Partner evaluation, engagement models, briefs, estimates, scope control and technical debt — how software actually gets bought and shipped.

02

Product & platforms

Web and mobile builds, SaaS multi-tenancy, APIs, data pipelines, AI features, DevOps cost and B2B UX that operators will use.

03

Industry software

Healthcare, real estate, food ordering, POS, fintech ops, CMS, social and marketing platforms — patterns that survive real operations.

Why Three Index

AI-first software development company in Ahmedabad. Founded 2020. Fifty-plus IT professionals. Five hundred-plus projects shipped.

We are a software engineering company: large enough to staff serious products and small enough that the people who wrote a module can still explain it. See how we operate, our AI development work, browse case studies, read the FAQ, or join the team.

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