# System Design

**KStore serves as the backend for:**

* User Management: Addresses, wallet balances, and details.
* Purchase Management: Order evaluation, submission, status updates, and payment integrations.

**Core Components:**

* Repositories: Handle data persistence and retrieval.
* Lazy Chain: Manages blockchain-based transactions.
* SQS: Facilitates asynchronous messaging for certain operations.
* Slack: Sends notifications about critical events or errors.

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#### **B2B (Coming soon)**

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