How to lower AEMaaCS license costs: 5 cost-reduction tips to save

A well-planned caching strategy reduces the number of requests to Edge Servers by serving cached responses directly from the browser, improving both performance and cost efficiency. 

• Use cache-control headers 
  • max-age: Specifies how long a resource should be cached. 
  • stale-while-revalidate: Serves stale content while fetching updates in the background. 
  • Example: Cache-Control: max-age=300, stale-while-revalidate=3600 
• Implement ETag headers
  • ETag helps us to identify resource changes, allowing servers to validate cached content. Prevents sending the full response for unchanged resources. 
  • For content requests, if a resource hasn’t changed, Edge Servers will return 304 Not Modified, and the request won’t count as a content request. 

Query parameters often prevent caching and lead to increased content requests.  

What you can do:  

• If query parameters are used only on the client-side, define cache rules to ensure resources are cached.  
• If query parameters are used on the server-side, enable caching if requirements allow it. Combine Cache-Control headers and ETags to exclude these requests from being counted.

Example configuration:

Tip: For AEM development, avoid using query parameters, especially for server-side logic. Use selectors and suffixes instead. 

Using AEM as a central proxy for backend integrations unnecessarily increases content requests. 

• Alternative Solutions: Move integrations to consumer side or use microservices, serverless functions, or edge workers for better cost and performance efficiency. 

Block unwanted traffic and mitigate risks with the following steps: 

• Traffic filters: Block malicious IPs and suspicious user agents. 
• Set rate limits to reduce the risk of DDoS attacks: For example, block clients exceeding 100 requests/second for five minutes. 
• WAF rules: If it’s licensed, enable Web Application Firewall to block suspicious activities. 

Regularly review Cloud Manager dashboards and CDN logs to stay within usage limits and identify optimization opportunities. 

• License dashboard: Track site usage and content request details. 
• CDN performance dashboard: View trends, alerts, and suggestions for improving cache efficiency. 
• Log analysis tools: Use pre-built dashboards integrated with ELK or Splunk to analyze cache hit ratios, traffic, and WAF configurations. 

Managing AEM as a Cloud Service (AEMaaCS) license costs doesn’t have to be overwhelming. By understanding how content requests are tracked and implementing these cost-saving strategies, you can reduce expenses and improve your website’s performance. 

Key Takeaways: 

1. Optimize caching with Cache-Control headers and ETags. 
2. Minimize query parameters and ensure efficient caching configurations. 
3. Avoid overusing AEM as a proxy for backend integrations. 
4. Configure filters and rate limits to block unnecessary traffic. 
5. Monitor Cloud Manager dashboards and CDN logs to stay on top of usage and optimization opportunities. 

By applying these tips, you can effectively lower the number of content requests, keep your AEMaaCS costs under control, and enhance your website's performance.