You are a senior content marketing strategist. Create a comprehensive 12-month content marketing strategy for a B2B SaaS company called 'DataFlow' that provides data integration and ETL solutions. The target audience is enterprise IT leaders and data architects. The strategy must include: 1) Content marketing goals aligned with business objectives (leads, pipeline, brand awareness), 2) Detailed buyer personas for primary and secondary audiences, 3) Content pillars and themes for each quarter, 4) Content formats mix (whitepapers, case studies, blog posts, webinars, videos, podcasts), 5) SEO and keyword strategy targeting high-value terms, 6) Content distribution plan across owned, earned, and paid channels (LinkedIn, industry publications, email, paid ads), 7) Editorial calendar with monthly content themes and specific content ideas, 8) Lead generation strategy with gated content and nurture sequences, 9) Metrics and KPIs to track success (traffic, engagement, MQLs, SQLs, pipeline influence), 10) Budget and resource allocation recommendations. Provide a detailed framework that can be executed by a team of 3-5 people.