AppzCart
AppzCode
MSMakeInSalem
BNI Power Team Presentation

Arunkumar Narayanan

Founder, AppzCart · AppzCode · MakeInSalem
Healthcare software · AI training · Salem industry

appzcart.com  ·  appzcode.com  ·  makeinsalem.com · linkedin.com/in/arunkumar-narayanan

My journey

14 years in tech. 6 companies. Then I built my own.

Wells Fargo office building, Hyderabad Wells Fargo office lobby Wells Fargo office interior
Hyderabad

Wells Fargo

Global bank · Fortune 500

CA Technologies campus, Hyderabad
Hyderabad

CA Technologies

Global enterprise software

14years experience
6companies
₹46Lpackage in 2023
Hyderabad · 10 yrs
Bangalore · 2 yrs
🚀Founder · 2023
02
My proudest moment

“

When I resigned, the CEO of Technumen called me personally to ask me to stay.

The head of a company with 500+ employees and offices in India and the US — reaching out one-to-one to retain a single team member.

Incoming call

CEO
Technumen

Technumen03
Why I’m building

Two companies today.
A bigger dream tomorrow.

1

Build businesses that sustain

AppzCart and AppzCode serve real customers and generate revenue today.

2

Fund the dream project

Every rupee we earn is invested toward a larger product I’ll reveal when the time is right.

Arunkumar Narayanan04
What we build

Three businesses, one expert team

AppzCart

Healthcare software & cloud consulting

  • Hospital & clinic platform
  • Health management platform
  • Cloud & AI consulting (AWS, Azure)
AppzCode

AI training for people & companies

  • AI training for engineering teams
  • Corporate Masters Program
  • AI Foundry & business agents
MSMakeInSalem

Investment & industry platform for Salem

  • One front door for investors
  • Land, approvals & incentives desk
  • Showcasing Salem’s manufacturers
appzcart.com · appzcode.com · makeinsalem.com05
AppzCart · Hospital Platform

Run the entire clinic from a single screen

Less paperwork. More patient care.

  • Smart scheduling with WhatsApp & SMS reminders
  • Digital prescriptions in under a minute
  • Instant receipts & daily collection reports
  • Affordable, secure cloud — no IT team needed
Reminder sent to Meena
LIVE

Today’s clinic at a glance

10:00 Ravi Kumar✓ Checked in
10:20 Priya S.✓ Checked in
10:40 Anand R.• Waiting✓ Checked in
11:00 Meena K.• Booked
Reminders sent18
Today’s collection₹15,400
06
AppzCart · More solutions

Beyond the clinic

Health Management Platform

For individuals, nutritionists, gyms and fitness professionals.

  • Track checkups, lab results & health metrics
  • Medication reminders
  • Custom workout, diet & skin-care plans
  • Tools & API access for professionals
AWSAzure

Cloud & AI Consulting

Expert help for businesses moving to the cloud or adding AI.

  • AWS & Azure architecture
  • 50+ production-ready components
  • AI-powered features & insights
  • Security-first, 99.9% uptime design
07
AppzCode

AI training —
from prompt to production

Hands-on, six-week programs: retrieval, agents, evaluations and deployment.

AI Research

Real research, not just coursework

Jobs & Internship

From last lesson to first offer

Business Agents

AI agents that run your operations

AI Foundry

From prototype to production system

Corporate Masters

Upskill teams into AI experts

Business Launch Kit

Your portfolio, built and hosted

$ appzcode train --weeks 6
› prompts → agents → evals
✓ deployed to production
08
Our team

Built by engineers from the world’s top product companies.

Product-grade quality

Global product-company standards, not agency shortcuts

Healthcare-ready

Secure, compliance-minded platforms

Local support

Dedicated help at no extra cost

AppzCart · AppzCode09
From technology to business

Understanding the Software Business

Before we learn how software is built, let’s understand who it serves, how it reaches customers, and how it creates value.

01

Who buys it?

People, businesses and governments

02

What is sold?

Products, platforms and services

03

How is it earned?

Subscriptions, projects and more

Business fundamentals10
Business fundamentals · 02

Who Is the Customer?

The business model often starts with one simple question: who pays for the product or service?

B2B

Business to Business

A company sells to another company.

Example
Salesforce provides CRM software to businesses.
B2C

Business to Consumer

A company sells directly to individuals.

Example
Netflix sells subscriptions to viewers.
C2C

Consumer to Consumer

Individuals transact with other individuals through a platform.

Example
A person sells a used phone through OLX.
B2G

Business to Government

A company provides products or services to government bodies.

Example
A vendor builds a government service portal.
B2B2C

Business to Business to Consumer

One business reaches consumers through another business.

Example
A bank offers a partner's service inside its app.
?

Ask this first

Who is the user, who is the customer, and who actually pays?

Remember: The person using software and the person paying for it are not always the same.
Business fundamentals11
How software is built · 03

Traditional Teams vs Agentic AI

The work is changing. Engineering discipline still matters.

01
THE CLASSIC WORKFLOW

Traditional Software

1UI/UX Team
Designs user journeys, screens and interactions
2Development Team
Builds frontend, backend, APIs and databases
3Testing / QA Team
Tests features, integrations and quality
4DevOps Team
Automates CI/CD, infrastructure and releases
5Deployment & Operations
Releases the application and monitors it in production
AI
THE AI-ASSISTED WORKFLOW

Agentic AI

1AI Coding Agents
Help plan, write, refactor and explain code
2Agent Orchestration
Coordinates tasks, tools and specialized agents
3MCP & Tool Integrations
Connect agents to approved tools, APIs, files and systems
4Automated Testing & Evaluation
Runs tests and checks outputs against requirements
5Human Review, DevOps & Deployment
People approve critical changes; CI/CD releases and monitors safely
PEOPLE↔AI AGENTS
Key idea: Agentic AI changes how teams perform and coordinate work — it does not remove the need for design, testing, security, human judgment or reliable deployment.
Software delivery · Traditional and agentic workflows12
FROM IDEA TO PRODUCT · 01

Start with a real problem

Example: a campus event app that helps students discover events and register.

QUICK QUESTION What is one annoying problem on your campus that an app could solve?
01UNDERSTAND THE USER

Discover

“Students miss events because information is scattered across WhatsApp groups, posters and emails.”

USER STORY
“As a first-year student, I want to see this week’s events in one place so I don’t miss them.”
DeliverableProblem statement + user story
02SET CLEAR BOUNDARIES

Define the MVP

MVP = Minimum Viable Product: the smallest useful version you can release.

IN · BUILD NOWEvent list · Event details · Register · Confirmation
OUT · NOT YETPayments · Chat · Personal recommendations
DeliverableScope + acceptance criteria (how we know it works)
03PLAN BEFORE CODING

Design the journey

Browse events→Tap event→Register→✓ Confirmed
Campus Events
Tech Fest 2026Friday · Main AuditoriumView details →
Design WorkshopSaturday · Lab 2View details →
DeliverableScreen sketch + architecture outline
THE ARCHITECT MINDSETBetter inputs → better AI output
✕ VAGUE PROMPT

“Build me a campus event app.”

✓ CLEAR PROMPT

“Build an MVP with an event list, event details, one-tap registration and confirmation. Exclude payments and chat. Success: a student can register in under 30 seconds.”

Build a product · Problem → scope → design13
FROM IDEA TO PRODUCT · 02

Design the system. Then build it.

Follow one real action through the stack: a student taps Register.

EXAMPLE WEB APP ARCHITECTUREExample stack. The layers matter more than the tools.
01

Frontend · React

Screen, event details and Register button

USER ACTION
Architect decidesWhat the student sees and when the button is enabled.AI writesThe screen, form state and API request.
Student taps Register↓ request
02

Backend · Java / Spring Boot

Checks rules and processes registration

BUSINESS RULES
Architect decidesWho can register, seat limits and duplicate-registration rules.AI writesThe endpoint, validation and service logic.
Validate + save↓ query
03

Database · PostgreSQL

Stores events, seat counts and registrations

SOURCE OF TRUTH
Architect decidesData model, unique constraints and safe capacity updates.AI writesSQL, migrations and data-access code.
← registration result returned to backend← API response updates the screen: “You’re registered!”
Software architecture · Layers, responsibilities and data flow14
FROM IDEA TO PRODUCT · 03

Make it reliable in the real world

Your app worked for 5 friends. Will it work for 2,000 students at 9 AM?

01

Test

Does it do what we promised?

On the campus app

A student registers once — and a full event rejects the next sign-up.

If you skip it

130 sign-ups for a 100-seat hall.

Unit testsAPI testsBrowser tests
›
02

Secure

Who are you, and what may you do?

On the campus app

Only signed-in students can register, and each gets exactly one valid place.

If you skip it

Anyone books seats for others or reads student emails.

AuthenticationAuthorization
›
03

Deploy

Can every student reach it safely?

On the campus app

Release to the cloud so the whole campus can use it — not just your laptop.

If you skip it

“Works on my laptop” — campus can’t open it.

CI/CDCloud releaseRollback plan
›
04

Observe

What is happening right now?

On the campus app

Watch errors, response time and seat counts the moment registration opens.

If you skip it

Site crawls at 9:01 and nobody notices.

LogsMetricsAlerts
›
05

Learn

What should we improve next?

On the campus app

Ask students where they got stuck, then fix that step in the next release.

If you skip it

The same confusing step, every single term.

FeedbackProduct analytics
THE ENGINEERING LOOPRepeat after every release
Test→Secure→Deploy→Observe→Learn↺
Security applies at every step — check permissions, protect student data, never trust a demo without validation.
ENGINEER’S MINDSETAnyone can generate code. Engineers make it work for real users.AI code can look perfect in a demo and still allow 130 registrations for a 100-seat hall.
Production thinking · Quality is part of the product15
THE MODERN AI ENGINEERING TOOLKIT

Your AI tool ecosystem

Start small. Follow the workflow. Add tools when you need them.

CLAUDE ECOSYSTEM

Think. Build.
Connect. Review.

01 · PLANClaude

Explore the campus problem, plan the MVP, compare architecture options. Projects and Artifacts can help organize context and create shareable outputs where available.

02 · CODEClaude Code

Work in a repository, edit files and run approved commands. Example: implement the event list and Register flow.

03 · CONNECTClaude Desktop + MCP

MCP is a standard way for AI applications to connect to approved tools and data sources.

04 · REVIEWAsk Claude to review

Look for bugs, missing edge cases and security risks—then verify findings with tests and human review.

01 PLAN & DESIGN START NOW

Figma · FigJam

Sketch the campus event list and map Browse → Register → Confirmation.

02 CODE & COLLABORATE START NOW

Git · GitHub

Track changes and review code. Eligible students can explore the GitHub Student Developer Pack; benefits and eligibility may change.

03 TEST & VERIFY ADD NEXT

Postman · Playwright

Postman tests the Register API; Playwright checks the student journey in a browser.

04 SHIP & AUTOMATE LEARN LATER

Docker · CI/CD · Cloud · n8n

Package the app, automate releases, host it and connect workflows when the project needs them.

Other AI assistants: ChatGPT · Gemini — useful for research, alternate explanations and second opinions.
!
Never paste your .env file, API keys or database password into any AI chat.

Use sample data, keep secrets in environment variables, and check permissions before connecting tools.

Tools change; engineering fundamentals compound.
Ask the room: “Raise your hand if you’ve used any of these.”16
MSMakeInSalem
Ask the DeskInvest Now
Steel City of Tamil Nadu

Build, make and grow in Salem

One front door for manufacturers and investors — land, approvals, skilled people and a supply chain that already runs from steel to silk.

01 · SECTOR

Steel & metals

Home of a major stainless-steel plant and its supplier base.

02 · SECTOR

Textiles & silk

Generations of handloom, silk and garment skills.

03 · SECTOR

Sago & food

India’s sago and tapioca hub, plus mango processing.

04 · SECTOR

Engineering

A node on Tamil Nadu’s defence and engineering corridor.

INVESTOR DESK Find the right land Clear approvals faster Hire skilled people Plug into the supply chain
makeinsalem.com · Built by our team17
AppzCart
AppzCode
MSMakeInSalem

Thank you

Arunkumar Narayanan · Founder

appzcart.com appzcode.com makeinsalem.com linkedin.com/in/arunkumar-narayanan 📞 +91 96320 13248
00:00