AppScale vs Google App Engine: What are the differences?

# Introduction
This Markdown code provides a comparison between AppScale and Google App Engine focusing on their key differences.

1. **Programming Languages**: AppScale supports a wider range of programming languages compared to Google App Engine. While Google App Engine primarily supports Python, Java, and Go, AppScale allows developers to use languages such as PHP, Ruby, Java, and Python, providing more flexibility for developers with diverse language preferences.

2. **Deployment Flexibility**: Google App Engine is a fully managed platform where deployment is handled by Google's infrastructure. On the other hand, AppScale offers the flexibility of deploying applications on private clouds, public clouds, or hybrid cloud environments, giving developers more control over where their applications are hosted.

3. **Datastore Compatibility**: AppScale is compatible with Google App Engine's Datastore service, enabling seamless migration of applications from Google App Engine to AppScale with minimal changes. This compatibility allows developers to leverage their existing Google App Engine applications on AppScale without major modifications.

4. **Customization Options**: AppScale provides more customization options compared to Google App Engine. Developers using AppScale have greater control over the underlying infrastructure, allowing them to fine-tune performance, scalability, and security settings based on their specific requirements.

5. **Licensing Model**: Unlike Google App Engine, which is a proprietary platform, AppScale is an open-source platform that allows developers to modify and customize the platform according to their needs. This open-source nature of AppScale gives developers more freedom and flexibility in how they use and extend the platform.

6. **Cost Structure**: Google App Engine follows a pay-as-you-go pricing model, where users pay for resources consumed. In contrast, AppScale offers a more cost-effective solution for businesses and developers, especially for applications that require predictable pricing or high levels of customization.

In Summary, this Markdown code highlights key differences between AppScale and Google App Engine, including support for multiple programming languages, deployment flexibility, datastore compatibility, customization options, licensing model, and cost structure.