A living modernization walkthrough

See legacy logic move forward.

Caravel ONE brings the AWS CardDemo mainframe sample into a navigable web application. Follow familiar banking journeys, see the source behind each screen, and inspect what has been converted and verified.

Explore the showroom How it works

A BASE100 demonstration built from the public AWS CardDemo sample. Access to the interactive workspace requires a demo account.

CARAVEL ONE / CARDDEMO
TRANSACTION CAVW · MAP CACTVWA
ACCOUNT VIEW
ACCOUNT00000000001
CUSTOMER000000001
AVAILABLE CREDITSource-derived
COBOL→SPRING BOOT→REACT
Source traceabilityPrograms, transactions and BMS maps remain identifiable.
Real application pathsExplore role menus, account and card flows, transactions and more.
Evidence with limitsVerified behavior and remaining gaps are kept distinct.

The approach

Modernization you can inspect.

The showroom connects original application structure to a contemporary experience while retaining the business meaning of the selected source.

01

Start with the source

Selected COBOL programs, BMS screens, data layouts and jobs provide the reference for each converted path.

02

Follow a real journey

Sign in as a user or administrator and navigate the application through its role-specific menus and interactions.

03

Check the evidence

Source-derived tests, migrated sample data and explicit status make implemented behavior and open gaps visible.

Inside the showroom

From menu to meaningful outcome.

Explore a connected application, with authentication, backend conversations and persisted sample data. The demo includes interactive and batch journeys; individual capabilities can have different verification status.

  • View and update accounts and cards
  • Browse and enter transactions
  • Request reports and inspect job runs
  • Review administrator and batch workflows
Example route

One source. A connected experience.

01 Choose Account View from the user menu
02 Enter a CardDemo account identifier
03 Inspect source-derived details
04 Return with the familiar PF3 action
The visual is an illustration of the converted journey, not a capture from a running mainframe.

Ready to explore?

Step inside the showroom.

Open the interactive application to experience Caravel ONE's CardDemo conversion through the available role-based journeys.

Open the showroom