● AWS Community Day Philippines · 2026

App Development with AWS

From enterprise AI engineering to products shipped after hours.

Bryl Lim Founder, AppBuildersPH AI Engineer · Full-Stack Developer · Tech Entrepreneur
Greek-classical halftone artwork of a sculptural builder working at a laptop

01 · Two lives

I have two lives as a developer.

By day · Professional
Enterprise software AI systems Cloud infrastructure
After hours · Builder
I still code. I build products of my own.
Tarsi Kabi Mayi 4 5 6 and many more!

02 · Ownership

Side projects are brutal engineering teachers.

When one person owns the product, every decision becomes visible.

BuildOperateOwn the outcome
Greek-classical halftone artwork of a solitary sculptural builder owning a project

03 · Start small

Don't architect for users you don't have.

At zero users, the simplest reliable architecture is enough.

01App 02Backend 03Database

Let real users reveal what needs to scale.

04 · Think backwards

Don't start with AWS.

Start with the problem.

01Problem
02Requirement
03Simplest reliable solution
Tarsi app icon Kabi app icon Mayi app icon 4 5 6 and many more!

05 · Side projects grow up

My apps stopped behaving like side projects.

Different products. Same shift: real users arrived, and the engineering had to grow up.

SHIPProducts across finance, health, travel, and community
LISTENReal users reveal what matters
OPERATEUseful apps become production systems

06 · The moment it became real

Someone paid for it.

And everything changed.

Revenue turns a side project into a production system.

07 · Engineering becomes business

Users don't care about your stack.

They care that the product is fast, secure, and dependable.

FastSecure ReliableTrustworthy
20,000 users can depend on a hobby app

08 · Protect what already works

Apps evolve. Regressions shouldn't.

Write tests before a change becomes a regression for 20,000 users—even if the app began as a hobby.

01Change 02Test 03Ship

Tests protect the behavior users already trust.

09 · A toolbox, not a checklist

This is where AWS starts making sense.

Start with simple managed paths like Amplify and Fargate. Add services only when the product needs them.

NeedShip a frontend
Managed frontendAWS Amplify
NeedRun a container
Managed containersAWS Fargate
NeedAccounts
IdentityAmazon Cognito
NeedReceipts
StorageAmazon S3
NeedProcessing
ComputeAWS Lambda
NeedGenerative AI
Foundation modelsAmazon Bedrock

10 · Map needs to services

Product requirement → cloud decision.

Prefer the managed service that removes the most operational work.

Product feature Engineering need Possible AWS solution
Ship a web appManaged frontendAWS Amplify
Run an APIManaged containersAWS Fargate
User accountsAuthenticationAmazon Cognito
Files + AIStorage + modelsS3 + Bedrock

11 · The acceleration

Then AI changed everything.

Before AI
IDEA→DESIGN→ FRONTEND→BACKEND→ DEBUG→DEPLOY
Weeks / months
Today

IDEA → AI → PROTOTYPE

Hours / days

12 · Engineering judgment

AI didn't delete software engineering.

PROTOTYPE ≠ PRODUCTION

SecurityReliabilityData integrity

13 · Apply intelligence deliberately

Not everything needs an LLM.

Deterministic software

Use it when the answer must be exact.

  • Business rules
  • Payments
  • Permissions

AI

Use it where interpretation matters.

  • Documents
  • Natural language
  • Reasoning

14 · Example: receipt processing

AI is part of the system. Not the system.

01Receipt 02Store 03AI reads 04Validate 05Database

AI should handle intelligence. Your application should handle truth.

15 · Different constraints

Three different worlds. Same fundamentals.

Enterprise

  • Reliability
  • Security
  • Scale

My products

  • Revenue
  • Users
  • Retention

Hackathons

  • Speed
  • Simplicity
  • Validation

16 · The engineering loop

The loop.

01Problem 02Build 03Ship 04Observe 05Improve

Then repeat.

17 · Right now

The barrier to building has collapsed.

One developer can now access infrastructure and intelligence that once required enormous organizations.

Cloud infrastructureServerless computing Managed databasesGenerative AI

18 · Community

AppBuildersPH

From building my own things to finding thousands of Filipinos doing the same.

Almost 50,000developers and builders
Greek-classical halftone artwork of four builders collaborating around a laptop

19 · Build anyway

You don't need permission to build.

My apps started after work. Some found users, some made money, and some failed.

All of them made me a better engineer.

● App Development with AWS

Build. Ship. Learn. Scale.

Start with a real problem. Build the simplest thing that solves it. Put it in someone's hands. Let real users expose the problems you actually have.

Bryl Lim AWS Community Day Philippines 2026 appbuildersph.com