Companies have been implementing large agile projects for a number of years, but the 'stigma' of 'agile only works for small projects' continues to be a frequent barrier for newcomers and a rallying cry for agile critics.
What has been missing from the agile literature is a solid, practical book on the specifics of developing large projects in an agile way.
Dean Leffingwell's book Scaling Software Agility fills this gap admirably.
It offers a practical guide to large project .