Meet Twilio. One of most most brilliant startups I’ve come across in a while. I say brilliant because I like simplicity… I like simple solutions for simple (but big) problems.

Say I’m a product company. I make tasty fizzy bevvies that give consumers the burst of energy they need to dance all night, code all night, study all night… I want to build a really cool voice application as an add-on to a mobile marketing campaign I’ll be rolling out.

Problem: I don’t have access to one of the few specialized (and expensive) app developers who have the skills to build it for me. But I do have a web development team… They don’t know any crazy telecom programming languages, but they do know PHP, Ruby, etc.

Solution: Twilio’s in-cloud API for voice communications leverages my existing web development team’s skills. In a few minutes and a few lines of code, they can create a custom voice application for us – hosted in the cloud.

Talk about taking a lesson from the easy bake oven. Twilio launched in 2008 and since then has been used by BP, Tumblr, Sony BMG and more. I think they’re on to something….

Think so too? Check them out when Jeff Lawson, Twilio‘s CEO pitches Twilio at Under the Radar: Clarity in the Cloud on April 24.

Case Study (From the Twilio Blog):

That’s right, Tumblr’s developers got wind of Twilio last week, and within a few hours had kicked out a post-by-phone feature. How does it work?

On your tumblr Goodies page, you enter your phone number and an optional PIN. When you call into the toll free number, it recognizes your CallerID, and automatically knows which blog you’re posting to! With the optional PIN, you can be sure nobody’s trying to post from your phone. It’s on your tumblog.