Siemens has been busy shoring up its portfolio, as it looks to spearhead a new drive into the smart building space – as a respected industrial technology provider that can now provide more of the complete application stack. The two firms it has recently bought, Enlighted and J2 Innovations, are quite different, but together they are expansionist. The move allows Siemens to widen its offerings for building developers and managers – for those looking at new builds, and those looking to retrofit. As more and more appliances and devices inside a building get IoT features, as the product development teams embrace new sensors and connectivity options, the big players like Siemens will be able to sling a much more complete…