An organizational development issue may sound like a culture shift, a gap between today's function and how you want to function, or other large issues for which you aren't certain of the cause.
A learning intervention issue may sound like any need that requires learning on the part of your employees. It may be the result of performance analysis or organizational development needs--or you could already know what you need.
Instructor - led training
Micro - learning
Learning paths and coaching guides
New hire training
A performance consulting issue may sound like any particular performance metric that needs growth, or where gaps in performance exist. This may be new behavior, or taking existing performance to the next level.