Digital Commercials are defined as spots that are used to advertise a product or service that are run on websites or platforms other than the client's own. For example, a 15 second recording that plays on YouTube before the requested content begins. Explainer videos are not included in this rate, they fall into INTERNET USAGE / EXPLAINER in another category.
Why the difference in approach? Lots of my e‑learning and corporate jobs are done for production houses that will be adding other voices to the mix. Ironically, if I record my voice via a great mic and preamp, and add some nice processing, it can end up standing out from the other voices, drawing attention to itself. The production house will see this as me causing them a problem, even though my recording sounds better than the others!

"We recorded two or three takes of each story, and within those takes there were some pick‑ups [overdubs] for certain lines. When I was editing, I used takes that gave the best delivery, had the least movement or other noise, and provided the most provoking images. In some cases [we used] the first take. Sometimes, after saying a line over and over, one starts to lose the meaning of the line. Pick‑ups should go back to the top of the sentence, making editing much easier.”

There are two main priorities in voiceover work: the message that you're being asked to convey; and invisibility — by which I mean you never want people to notice your voice. This might sound counter‑intuitive. After all, why not make your voice sound great? Well, you need the listener to focus on the message your client is paying you to get across, rather than your voice itself, so it needs to sound natural. Even for tag lines, where you might think a fuller, warmer, more compressed (or whatever) voice would be appropriate, the production house will often want to perform EQ and compression themselves. This lesson took me a long time to learn, but my clients are much happier when I send them a nice, dry recording. I simply remind myself that I'm supplying the raw material for them to add to their mix, and letting them make their magic.
A demo recording of you doing voice-over work is your CV and your business card combined. If you're applying for a voice-over job, you can send the potential customer your demo via the Internet. Ideally you have multiple demos for different types of gigs. For commercials, clients want to hear 60 to 90 seconds of voice work. If you're auditioning as an audiobook reader, five minutes of demo proves that you can stay in character over a longer stretch of time.