Difference between Test Strategy and Test Plan

TEST STRATEGY:

A Test Strategy outlines the Test Approach of the Project. Test Strategy is basically considered as the High-Level document that defines the objectives of Testing in a Project derived by the Test/QA Managers.

Components under Test Strategy:

Scope and Objectives
Roles and responsibilities
Communication and Status reporting
Test deliverables
Standards
Test automation and tools
Types of Testing
Test Metrics
Risks and Mitigation Plans
Defect reporting and tracking
Change Management
Training plan

TEST PLAN:

Test Plan is a detailed document that includes all the tasks for QA Project, Schedules them, defines the scope of the project, roles & responsibilities, risks, entry & exit criteria, test objective, and anything else that you can think of. It is basically derived from SRS, FRD, or Use Case Documents by Test/QA Leads of the Projects.

Components of Test Plan:

Introduction
Items under Test
Features In-Scope
Features Out of Scope
Test techniques
Testing tasks
Suspension criteria
Features pass or fail criteria based on Severities
Test environment (Entry criteria, Exit criteria)
Sign Off Criteria
Staff and training needs
Responsibilities
Schedule