If your company has a tight security model, your IT team may need to manually whitelist domains of your web-based tools. Here are the ones that make Showcase Workshop work:
showcaseworkshop.com
*.showcaseworkshop.com
*.pndsn.com
www.filestackapi.com
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Everything you've ever wanted to know about Showcase Workshop, a digital presentation tool for sales representatives that brings together slideshows, videos, pricelists, and brochures.