Complex Event Processing on Event-Driven Networks, In-Memory grid, and parallel processing with the following entity aggregation are not isolated standalone technologies that can be evaluated versus / instead of a service-oriented approach but parts and supporting blocks of SOA in a broad prospective. Similar to the cloud methodology and mechanisms, the Cloud Service / Resource Broker is not someone who is trying to upsell you the remote hosting services, which are provided by the company two blocks away.

SOA and Cloud are quite interconnected, complementing each other with atomic and transportable units of work at one side (genuine SOA) and virtually unlimited distributed computing resources (Service Grid and Canonical Resources SOA patterns, which are provided by cloud) at another.

With recent developments, Oracle can practically provide all the necessary building blocks for all implementation tiers and frameworks, both on-premise and offsite. Complex silo-like applications, such as Salesforce, are now available on cloud. They can be easily integrated with the local Oracle SOA Suite, or clouds from other vendors can be linked to Oracle Cloud Farm with not much effort. This approach will allow you to boost your processing right away without making any significant investments in your local infrastructure, paying as you go. For those who already have corporate data centers with service infrastructures of any level of maturity, a more gradual pattern-based approach would be wiser. Just remember where we started; each pattern is the answer to a particular, repeatable, and identifiable problem. Identify your problem first.