1. Architecture and Purpose: AWS Elemental MediaLive is a live video encoding service that focuses on providing high-quality video processing, packaging, and delivery in the cloud. It is designed for delivering real-time video streams at scale for live events, broadcasts, and online streaming platforms. On the other hand, Kurento is an open-source WebRTC media server that enables real-time communication and media processing capabilities for web and mobile applications. It is primarily used for building video conferencing, streaming, and recording applications.

2. Managed Service vs Open-source: AWS Elemental MediaLive is a managed service offered by Amazon Web Services (AWS), which means that AWS handles the infrastructure management, scalability, and maintenance aspects. In contrast, Kurento is an open-source project that requires users to set up and manage their own infrastructure, including servers, network configurations, and software updates.

3. Scalability and Elasticity: AWS Elemental MediaLive is designed to handle large-scale live video streaming with built-in scalability and elasticity features. It automatically adjusts the resources based on the demand, making it suitable for high-traffic events and broadcasts. On the other hand, Kurento's scalability depends on the infrastructure it is deployed on and requires manual configuration and management to handle increased traffic.

4. Integrations and Services: AWS Elemental MediaLive integrates seamlessly with other AWS services, such as AWS Elemental MediaPackage and AWS Elemental MediaStore, to provide end-to-end video processing and delivery solutions. It also offers integrations with popular content delivery networks (CDNs) and streaming platforms. Kurento, being an open-source solution, can be integrated with various third-party services and platforms, but the integrations need to be developed and maintained by the users.

5. Encoding and Transcoding Capabilities: AWS Elemental MediaLive offers a wide range of video encoding and transcoding features, including adaptive bitrate streaming, format conversion, and real-time video processing. It supports industry-standard codecs and formats for delivering high-quality video streams across different devices. Kurento, on the other hand, focuses more on real-time communication and media processing functionalities, such as WebRTC signaling, media mixing, and filtering, rather than extensive video encoding and transcoding capabilities.

6. Pricing Model: AWS Elemental MediaLive follows a pay-as-you-go pricing model, where users pay for the resources they consume and the duration of their video streams. The pricing is based on factors like video resolution, bitrate, and duration. Kurento, being an open-source project, does not have a specific pricing model. However, users are responsible for the infrastructure costs, maintenance, and any additional services or integrations they require.

In Summary, AWS Elemental MediaLive is a managed live video encoding service offered by AWS, designed for scalability, high-quality video processing, and seamless integration with other AWS services, whereas Kurento is an open-source WebRTC media server that focuses on real-time media processing and communication capabilities, requiring users to manage their own infrastructure and integrations.