Microsoft’s Azure cloud computing division has launched the technical preview for its Azure Stack, with new PaaS services and DevOps tools thrown in this week. The company says this is the first installment on continuous innovation updates for datacenters running Azure instances. The new trial is a public beta for the Azure IoT Stack, opening it up from the limited private trials that select customers have been privilege to for the past two weeks. Also announced this week was the commercial launch of the Azure IoT Hub, a part of the larger Azure IoT Suite that was launched back in September. The full Suite provides the analytics and data processing tools that are familiar territory for cloud computing users, but…