1. Deployment Models: Azure Functions are serverless computing platforms provided by Microsoft Azure, allowing users to develop and run event-triggered code without managing infrastructure. On the other hand, Zoho Catalyst is a serverless platform by Zoho that offers a variety of deployment models, including private, public, and hybrid clouds, providing more flexibility to users for deploying functions based on their requirements.
2. Supported Languages: Azure Functions support a wide range of programming languages such as C#, JavaScript, Python, and Java to develop serverless functions. In contrast, Zoho Catalyst primarily supports Node.js for serverless function development, limiting the language options available to developers.
3. Integration Capabilities: Azure Functions have extensive integrations with other Azure services, enabling seamless interaction with Azure Storage, Azure Cosmos DB, Azure SQL Database, and more. On the contrary, Zoho Catalyst is tightly integrated with the Zoho suite of applications, enabling users to easily connect serverless functions with Zoho CRM, Zoho Creator, Zoho Desk, and other Zoho products.
4. Pricing Structure: Azure Functions use a consumption-based pricing model, where users pay only for the resources consumed by their functions. In contrast, Zoho Catalyst offers a predictable pricing model with fixed monthly charges based on the selected plan, providing users with cost predictability for their serverless workloads.
5. Scalability Options: Azure Functions can automatically scale based on demand, ensuring high availability and performance for applications during peak times. Zoho Catalyst also offers scalability features but may have limitations in terms of scaling compared to the scalability options available in Azure Functions.
6. Monitoring and Logging: Azure Functions provide robust monitoring and logging capabilities through Azure Monitor, enabling users to track function performance, errors, and resource utilization efficiently. Zoho Catalyst offers basic monitoring features, but it may lack the comprehensive monitoring and logging options available in the Azure ecosystem.

In Summary, Azure Functions offer broader language support, extensive Azure integrations, and flexible pricing models, while Zoho Catalyst provides deployment flexibility, tight integration with Zoho applications, and predictable pricing for serverless functions.