By Mary Jo Foley Starting July 12, Microsoft’s annual Worldwide Partner Conference kicks off in Washington, DC. The company’s loudest messaging at the four-day event will be that Microsoft partners need to be “All In” with the cloud, just like Redmond itself. Microsoft will be highlighting many of its partners that have managed to transition their businesses so as to be more cloud-centric. But company officials also will attempt to convince the rest of the nearly 10,000 expected attendees that it’s time for them to be leading with cloud services like Microsoft’s Business Productivity Online Suite (BPOS), the forthcoming Windows






