The four major IT value streams are:
Value Stream One - Strategy to Portfolio, or S2P. Define your strategy to balance and broker your portfolio
Value Stream Two - Requirement to Deploy, or R2D. Prioritize every requirement to build the best services and deploy them
Value Stream Three - Request to Fulfill, or R2F. Handle each request by streamlining the process to fulfill it
Value Stream Four - Detect to Correct, or D2C. Seek to detect issues and to correct them before they impact the user