Modernize your legacy system. Without starting over.
Grown over years, touched by dozens of developers, documented by no one. Jardis gives your PHP monolith the DDD architecture it should have had from day one. Step by step, without a rewrite.
Grown without a plan. Now you pay the price.
Legacy systems don't die suddenly. They get slower, riskier, and more expensive until every change becomes a gamble.
Every change can break everything
No clear boundaries, no layers, no contracts. A fix in checkout breaks invoicing because both modules share the same classes and tables. Regressions are the norm, not the exception.
Business logic is everywhere
Validations in controllers, calculations in views, business rules in SQL queries. Nobody knows where the truth lives anymore. Duplicated logic, contradictory results, and no safe place to start refactoring.
New developers need months to ramp up
No onboarding document can explain what grew organically over 10 years. Every new developer needs months before they can work productively without breaking things.
How Jardis Solves Legacy Modernization.
Jardis doesn't replace your code. It gives your system the structure it never had.
Identify and isolate domains
Jardis generates standalone Bounded Contexts from your domain analysis. Orders, customers, billing: each domain becomes a clearly separated package with its own entities, aggregates, and events. The new structure lives alongside your legacy code.
No big-bang rewrite, controlled restructuring
You migrate one domain at a time. Jardis generates the target state for each Bounded Context. Your team moves business logic from the monolith into the new architecture step by step. No downtime, no risk.
Consistent structure for every new domain
Every generated Bounded Context follows the same hexagonal architecture. Entities, commands, queries, events, API contracts, and the repository pipeline. Consistent patterns instead of individual interpretation per developer.
See what three files turn into.
Three definition files in, a complete bounded context out. Browse the generated code.
# Database Schema — Sales Bounded Context
# This file defines the persistent storage structure.
schema:
domain: ECommerce
boundedContext: Sales
tables:
order:
columns:
id:
type: integer
primary: true
autoIncrement: true
public_id:
type: uuid7
unique: true
customer_email:
type: string
length: 255
status:
type: string
length: 32
default: "draft"
total_amount:
type: integer
currency:
type: string
length: 3
default: "EUR"
created_at:
type: datetime
updated_at:
type: datetime
nullable: true
order_item:
columns:
id:
type: integer
primary: true
autoIncrement: true
order_id:
type: integer
foreignKey:
table: order
column: id
onDelete: cascade
product_name:
type: string
length: 255
sku:
type: string
length: 64
quantity:
type: integer
unit_price:
type: integer
line_total:
type: integer
Why Teams with Legacy Systems Choose Jardis.
From an overgrown monolith to maintainable architecture. Without throwing everything away.
Domains Instead of Spaghetti
Each business domain becomes a standalone package. Orders can no longer reach into customer tables. Dependencies become explicit instead of implicit.
New Features in Hours Instead of Weeks
New Bounded Context for an additional domain? Define the schema, start the builder, production-ready structure in minutes. No manual infrastructure setup needed.
Changes Without Fear
Clear domain boundaries mean: a change in billing cannot break checkout. Contracts between Bounded Contexts make dependencies visible and manageable.
Ready to give your legacy system a real architecture?
Join the WaitlistStructure costs less than chaos.
Try Jardis 7 Days Free
Point Jardis at your real domain. Discovery, structure, and your first platform build.
Join WaitlistThe complete DDD architecture with all classes and contracts. Your team ships features, not infrastructure.
Join WaitlistThe complete business logic with handlers, validation, and pipelines. What used to be a sprint is now a build.
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Curious how Jardis works?
Discover JardisFrequently Asked Questions
Answers to the most important questions about Jardis for legacy modernization.
No. Jardis is built for incremental migration. You identify a domain, generate the Bounded Context, and migrate the business logic. The rest of the system keeps running as before.