1. Deployment and Scalability: LogDNA excels in its ease of deployment and scalability as it is a cloud-native solution that requires minimal setup and maintenance. On the other hand, Splunk Enterprise is an on-premises solution that may require more complex deployment procedures and maintenance efforts, especially for large-scale environments.

2. Cost and Licensing: LogDNA typically offers a more cost-effective pricing model with transparent and straightforward pricing plans based on data usage. In contrast, Splunk Enterprise is known for its higher upfront costs, requiring a substantial investment in licensing and infrastructure for on-premises deployments. Additionally, Splunk's pricing can become complex as it is tied to various factors like data volume and additional features.

3. Search and Query Capabilities: Splunk Enterprise is renowned for its advanced search and query functionalities, allowing users to perform complex searches and correlations across large volumes of data. LogDNA, while efficient for log management, may not offer the same level of advanced search capabilities as Splunk, making it more suitable for simpler use cases.

4. Integration Ecosystem: Splunk Enterprise boasts a vast integration ecosystem with various third-party tools and applications, allowing for seamless integration with existing infrastructure and applications. In comparison, LogDNA's integration ecosystem may be limited in scope, potentially requiring custom solutions for specific integration requirements.

5. Machine Learning and AI Capabilities: Splunk Enterprise incorporates advanced machine learning and AI capabilities for data analysis and predictive insights, enabling users to uncover trends and anomalies in the data. LogDNA may not offer the same level of sophisticated machine learning features, potentially limiting its capabilities in advanced data analysis.

6. Compliance and Security Features: Splunk Enterprise offers robust compliance and security features, making it a preferred choice for organizations with stringent security requirements and regulatory compliance needs. LogDNA, while secure, may not provide the same level of comprehensive compliance and security features as Splunk Enterprise.

In Summary, LogDNA and Splunk Enterprise differ in deployment and scalability, cost and licensing, search and query capabilities, integration ecosystem, machine learning and AI capabilities, as well as compliance and security features.