How To Integrate Existing Web App To Shopify App Store?

Integrating an existing web app with the Shopify App Store can provide additional value to Shopify merchants and expand the reach of your application. To do this, follow these general steps:

Understand Shopify App Guidelines:
Before you begin the integration process, review Shopify's App Store guidelines and policies to ensure your web app complies with their requirements. This includes security standards and user experience guidelines.

Create a Shopify Partner Account:
To list your app on the Shopify App Store, you'll need to become a Shopify Partner. You can sign up for a partner account on the Shopify website.

Develop Your App:
Ensure that your existing web app is fully functional and integrates well with the Shopify platform. Shopify offers various APIs (Application Programming Interfaces) that allow you to connect your app with their system. You may need to develop additional features or functionality specifically for Shopify users.

Test Your Integration:
Thoroughly test your integration to ensure it works seamlessly with Shopify. Check for any bugs or issues that might affect user experience. You can use Shopify's development and testing environment, known as the Shopify Partner Dashboard, to test your app.

Create App Listing:
Go to the Shopify Partner Dashboard and create a listing for your app. This includes providing a description, screenshots, pricing details, and any other relevant information that potential users may need.

Submit Your App for Review:
Submit your app for review to the Shopify App Store team. They will assess it for compliance with their guidelines, security standards, and overall quality. Be prepared to address any feedback or concerns they may have.

Market Your App:
Promote your app to the Shopify merchant community. This can include creating marketing materials, reaching out to potential users, and using various channels to increase your app's visibility.

Provide Support:
Offer excellent customer support for Shopify users who install your app. Be responsive to inquiries and address any issues promptly.

Update and Maintain:
Continue to update and maintain your app to ensure it remains compatible with Shopify's evolving platform and adheres to their policies.

Launch and Monitor:
Once your app is approved and listed on the Shopify App Store, monitor its performance and gather user feedback to make improvements and updates as needed.

Remember that integrating with the Shopify App Store can be a valuable opportunity to reach a broad audience of e-commerce businesses. It's crucial to prioritize quality, security, and user experience throughout the development and integration process.

To develop Shopify apps, you'll need a Shopify Partner account. Create a development environment for your Shopify app. You'll need a server to handle app installations and webhooks.If you want to publish your app on the Shopify App Store, you'll need to follow Shopify's guidelines for app submission, which include a review process.Promote your app to attract potential users. Utilize Shopify's marketing resources and consider digital marketing efforts to increase its visibility.

Integrate your existing web app with Shopify by creating a Shopify Partner account, enhancing your app with Shopify-specific features, and submitting it for review. Upon approval, launch your app on the App Store and provide ongoing support.

It will be a pain in the ass, unless you follow the Shopify recommended tech stack. Talking from experience, as I use none of the Shopify recommended technologies. If you use some of the Shopify technologies (JS backend or RoR backend) you can try starting here: https://shopify.dev/docs/apps/getting-started/create

Otherwise, I would start by reading and understanding the Authentication section, which will be used for authenticating stores and "installing" the app on their store:
https://shopify.dev/docs/apps/auth

Then, for the frontend, you will need to deep dive into the Polaris framework / App Bridge library, which is used for embedding your app into Shopify admin: https://shopify.dev/docs/apps/tools/polaris

Follow these guidelines to fix it:
Create a Shopify Partner account.
Build a Shopify app and handle OAuth authentication.
Implement app installation.
Develop your app's features.
Use Shopify APIs and webhooks.
Test your app thoroughly.
Submit your app to the Shopify App Store.
Manage and promote your app.

It is possible to link your current web application with the Shopify App Store. Shopify provides documentation and APIs to assist you in getting started.