Updated Cloud Cache Benefits (markdown)

Cloud-Cache-Benefits.md

@@ -80,6 +80,12 @@ However, how to make SeaweedFS work with data already on cloud?
     * Different datasets may need to be on different vendors, based on access pattern, latency, cost, etc.
   * With SeaweedFS Cloud Cache
     * Transparently switch to from one vendor to another.
+* Switch S3 Compatible Storage Vendors
+  * Problem
+    * Other S3 compatible vendors are known to have lesser flexibility, scalability and performance as SeaweedFS.
+  * With SeaweedFS Cloud Cache
+    * Compare SeaweedFS with the vendor over a long period of time.
+    * Transparently switch away if SeaweedFS works better.
 * Move Off Cloud
   * Problem
     * Cloud storage is costly!