Underscoring the significance of data in an OTT video world, Bertelsmann-owned European media group RTL has acquired advertising technology supplier Yospace for $33 million – to tighten its ad-driven streaming ship. The UK-based vendor is an expert in stitching replacement ads into multi-platform services in a way that it claims replicates original broadcast channels, and the mounting pressure on the broadcast industry suggests consolidation in ad tech could become a running theme. Others could learn a lot from RTL, one of Europe’s most advanced and forward-thinking media groups in advertising technologies. Its entire ad platform has undergone an overhaul within the past year, after it completed the merger of the two online programmatic ad sales platforms SpotX and Smartclip last…