Please explain the difference between Process Performance Baseline (PPB) and Process Capability Baseline (PCB) as OPP PA talks only about establishment of process performance baselines.
This is a good, but very easy question to answer. First, you should ALWAYS check the CMMI Glossary first before asking a question. Many times you will find the answer to your question in the Glossary. Here are the Glossary definitions for these two terms. I think that these definitions clearly point out the differences.
Process Capability – The range of expected results that can be achieved by following a process.
Process Performance Baseline – A documented characterization of the actual results achieved by following a process, which is used as a benchmark for comparing actual process performance against expected process performance.