Migrating Delphi Applications to the Cloud

The challenge

Your Delphi application works. It’s been running for years. But the business is moving to AWS, and suddenly you need your application to store files in S3 instead of a file server, send notifications through SNS instead of email, and manage secrets through AWS rather than config files. The application itself doesn’t need rewriting — it just needs a way to talk to AWS.

A practical approach

Migration doesn’t have to be all-or-nothing. The AWS SDK for Delphi lets you replace individual components one at a time:

Step 1: Move file storage to S3

Replace local file operations with S3 calls. User uploads, generated reports, and backups go to the cloud. The SDK handles multi-part uploads, so large files just work.

Step 2: Add cloud messaging

Decouple long-running operations with SQS message queues. Move report generation, email sending, and data processing off the main thread. If your app crashes, the work is still in the queue.

Step 3: Secure your configuration

Move hardcoded credentials and API keys to AWS Secrets Manager. The SDK reads them at runtime, so you never store secrets in config files or source code again.

Step 4: Add cloud-native features

Once connected to AWS, you can add capabilities that weren’t practical before: AI-powered image analysis with Rekognition, text-to-speech with Polly, or real-time translation with Amazon Translate.

Why the AWS SDK for Delphi?

Amazon doesn’t ship an official SDK for Delphi. The Appercept AWS SDK fills that gap with idiomatic Delphi interfaces, thorough test coverage, and documentation written by developers who use it. It honours AWS credentials the same way as official SDKs, so your DevOps team can manage access through IAM without learning anything Delphi-specific.