Develop a comprehensive 500-word article outlining a strategic implementation plan for Google Analytics 4 (GA4).  The plan should address key considerations for businesses migrating from Universal Analytics (UA) or implementing GA4 from scratch.  Include detailed steps, best practices, and potential challenges.  The article must cover the following aspects:</p>
<p>**Phase 1: Planning &#038; Preparation (approx. 100 words):**<br />
* Define clear objectives and KPIs for GA4 implementation. What business questions will GA4 help answer?<br />
* Identify key stakeholders and their roles in the implementation process.<br />
* Assess current analytics infrastructure and identify gaps.<br />
* Choose the right GA4 configuration (e.g., standard or enhanced measurement).</p>
<p>**Phase 2: Implementation (approx. 150 words):**<br />
* Detailed steps for setting up GA4 properties and data streams.<br />
* Guidance on implementing enhanced measurement features (e.g., scroll depth, video engagement).<br />
* Strategies for integrating GA4 with other marketing tools and platforms (e.g., Google Ads, CRM).<br />
* Best practices for data governance and compliance (e.g., data privacy).</p>
<p>**Phase 3: Verification &#038; Optimization (approx. 150 words):**<br />
* Methods for verifying data accuracy and completeness.<br />
* Strategies for troubleshooting common GA4 implementation issues.<br />
* Techniques for optimizing GA4 configurations for better data insights.<br />
* How to set up custom reports and dashboards to monitor key metrics.</p>
<p>**Phase 4: Ongoing Monitoring &#038; Analysis (approx. 100 words):**<br />
* Best practices for regular data analysis and reporting.<br />
* Strategies for using GA4 data to inform marketing decisions.<br />
* How to identify areas for improvement and optimize marketing campaigns based on GA4 insights.<br />
* A plan for continuous improvement and adaptation of the GA4 implementation.</p>
<p>The article should be written for a marketing or analytics professional with intermediate knowledge of Google Analytics.  The tone should be informative, practical, and actionable, providing a clear roadmap for successful GA4 implementation.  Include real-world examples to illustrate key concepts.