Modernize Your Monolith. Without Rewriting Everything.
Full rewrites fail. Jardis generates the DDD target architecture for your PHP monolith, so you can migrate bounded context by bounded context while the system keeps running.
Why Modernization Projects Fail.
The monolith grows, the architecture erodes. But the big-bang rewrite is not the answer.
The rewrite that never ships
Teams start ambitiously with a full rewrite. 18 months later, two systems run in parallel, neither complete. Features get built twice, bugs get fixed twice.
No clear target architecture
Migration without a target architecture just produces a new monolith. Without defined domain boundaries, you move the same problems into a new repository.
Feature development grinds to a halt
During the rewrite, the team ships no new features. The business loses patience, the migration gets cancelled. The monolith stays.
How Jardis Solves Brownfield Migration.
Jardis defines the target architecture and generates the code. Your team migrates incrementally, without stopping operations.
Target architecture from your domain model
You model your bounded contexts in Jardis. The builder generates the complete target architecture with clear package boundaries. Each context becomes a standalone module that can coexist alongside the monolith.
Context by context, not big bang
Start with the bounded context that causes the most pain. Jardis generates the target module, your team migrates the logic. The monolith shrinks with each step. Feature development continues in parallel.
Production-ready structures from day one
Entities, aggregates, commands, events, repository interfaces: all generated, all architecture-compliant. No boilerplate writing, no debates about folder structures. The team focuses on migrating business logic.
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 Migrate with Jardis.
Because incremental migration only works when the target architecture is defined.
Old and New Run Side by Side
Each generated bounded context is a standalone package. It can be deployed alongside the monolith while you migrate logic piece by piece.
Ship Features During the Migration
No feature freeze. New features are built directly in the new bounded context. Legacy features migrate at your own pace.
Same Architecture in Every Context
Whether team A or team B migrates: the generated code follows the same patterns. No architecture drift, no team-specific deviations.
Ready to modernize your monolith step by step?
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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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Discover JardisFrequently Asked Questions
Answers about brownfield migration with Jardis.
No. That is exactly the point. You pick one bounded context, generate the target structure with Jardis, and migrate the business logic. The rest of the monolith continues running unchanged.