小程序开发有以下几个便利：

Mini program development has the following advantages:

低成本开发：相比于开发原生应用或网页，开发小程序所需的成本相对较低。由于小程序具有跨平台特性，可以在多个平台上运行，例如微信、支付宝等，这样可以节省时间和开发成本。

Low cost development: Compared to developing native applications or web pages, the cost of developing small programs is relatively low. Due to the cross platform feature of applets, they can run on multiple platforms, such as WeChat, Alipay, etc. This can save time and development costs.

快速上线：小程序的审核流程相对简单，通常可以在较短的时间内上线。而原生应用需要经过严格的审核和发布流程，耗时更长。

Quick launch: The review process for mini programs is relatively simple and can usually be launched in a relatively short period of time. Native applications require a strict review and release process, which takes longer.

更好的用户体验：小程序可以借助设备的各种功能，如摄像头、地理位置等，提供更加丰富的用户体验。小程序可以直接在聊天界面中打开，无需下载和安装，方便用户的使用。

Better user experience: Applets can leverage various features of the device, such as cameras, geographic location, etc., to provide a richer user experience. The mini program can be opened directly in the chat interface without the need for download and installation, making it convenient for users to use.

跨平台支持：小程序可以同时在不同的平台上运行，例如微信、支付宝等。这意味着开发一个小程序可以覆盖更多的用户，提高产品的曝光度和用户数量。

Cross platform support: Applets can run on different platforms at the same time, such as WeChat, Alipay, etc. This means that developing a small program can cover more users, increase the exposure of the product and the number of users.

数据分析和运营支持：小程序平台提供了丰富的数据分析和运营支持工具，可以帮助开发者深入了解用户行为、产品表现等，并进行针对性的优化和调整。

Data analysis and operational support: The mini program platform provides rich data analysis and operational support tools, which can help developers gain a deeper understanding of user behavior, product performance, and make targeted optimizations and adjustments.

总之，小程序开发具有低成本、快速上线、良好的用户体验、跨平台支持和数据分析等便利，成为许多企业和开发者的首选开发方式。

In short, small program development has become the preferred development method for many enterprises and developers due to its low cost, fast launch, good user experience, cross platform support, and data analysis.