For almost ten years, Facebook has been on a mission to make the world more open and connected. Today we connect more than 1.15 billion people each month, but as we started thinking about connecting the next 5 billion, we realized something important: the vast majority of people in the world don’t have access to the internet.

Today, only 2.7 billion people are online — a little more than one third of the world. That is growing by less than 9% each year, but that’s slow considering how early we are in the internet’s development. Even though projections show most people will get smartphones in the next decade, most people still won’t have data access because the cost of data remains much more expensive than the price of a smartphone.

Below, I’ll share a rough proposal for how we can connect the next 5 billion people, and a rough plan to work together as an industry to get there. We’ll discuss how we can make internet access more affordable by making it more efficient to deliver data, how we can use less data by improving the efficiency of the apps we build and how we can help businesses drive internet access by developing a new model to get people online.

I call this a “rough plan” because, like many long term technology projects, we expect the details to evolve. It may be possible to achieve more than we lay out here, but it may also be more challenging than we predict. The specific technical work will evolve as people contribute better ideas, and we welcome all feedback on how to improve this.

Connecting the world is one of the greatest challenges of our generation. This is just one small step toward achieving that goal. I’m excited to work together to make this a reality.

For the full version, click here.