Using LED fixtures.
Don't want to dive into all the details (it will get long winded, and is probably better suited for the "growing under lights" section). I build my own lights. Keeps the cost factor down low (in terms of "off the shelf, plug & play fixtures vs. DIY, and electrical costs to run the lights)... I already have the tools, and most of the materials needed. Design is based on the size of my growing enclosures, especially in regards to the height of the enclosure and/or terrarium.
I run these lights soft (lower amperage) and actively cool all fixtures (thermal management) regardless of whether it really needs it or not. I use a blend of 445,495,660,720nm, along with 5,000k & 6500k white diodes to create a spectrum that is favorable for my plants and appealing to my eye. A couple examples below (pictures always seem to say it better than words). And I apologize for already starting to get long-winded.
Using this on a 8x8x12 terrarium
Using this on a 12x12x18 terrarium
Still using this one, I built a a couple years ago, for a large orchid terrarium (that was originally being used for Tillies).