Supplier & Roster Management Consultancy

Supplier & Roster
Management

The relationships between marketing
teams and their suppliers.

Aligning Capability, Collaboration, and Commercial Value

In a fragmented marketing landscape, your agency roster is your most significant lever for growth—or your largest source of hidden waste. TrinityP3 provides the independent perspective and proprietary data needed to move beyond “managing” suppliers to optimizing ecosystems. We ensure that every partner, whether external, internal, or media-specific, is operationally aligned, commercially transparent, and focused on business outcomes. Our consultancy is built around four core advisory practices.

1. Managed Supplier & Roster Management

The foundation of a successful marketing department is a roster that is fit for purpose. We help you design the structure, find the partners, and ensure the commercial terms are robust.

  • Managed Tenders (Agency Selection): We move beyond the “beauty parade.” Our data-driven process uses proprietary insights to identify, evaluate, and select agencies based on capability, culture, and commercial transparency.
  • Roster Management & Alignment: We ensure your mix of Creative, Media, PR, and Digital partners works as a unified “Team of Teams” rather than in siloed competition.
  • Commercial Evaluations & Assessments: Using our Verificom tools and Ad Cost Checxker global rate benchmarks, we perform deep-dive financial audits to ensure your agency fee structures and resource allocations are competitive and fair.

2. High-Performing Teams: The Interaction Framework

A high-performing team is engineered, not accidental. We focus on the “white space” between organizations to eliminate the friction that kills productivity.

  • Engagement Agreements: We replace outdated, one-way SLAs with a collaborative “Operating Manual.” These agreements define the mutual accountabilities and daily Ways of Working (WoW) required for success.
  • Evalu8ing: Our proprietary, multi-directional diagnostic platform. We measure the health of your relationships—client-to-agency and agency-to-agency—turning the “soft skills” of collaboration into hard data.
  • Agency Operational Reviews: A deep-dive audit of your interaction models. We identify bottlenecks in briefing, approvals, and communication to recover the “Velocity Dividend” for your brand.

3. In-House Agency Advisory

The most successful marketing models are often hybrid. We help you build and manage internal capabilities that provide agility without sacrificing creative quality.

  • In-House Agency Strategy & Setup: We provide the financial modeling and capability mapping needed to build an internal team that complements your external roster.
  • In-Housing Governance: We implement the same high-performance frameworks (Engagement Agreements) used for external agencies to ensure your internal team is treated as a strategic partner, not a production “order-taker.”
  • IHA Performance Benchmarking: Objectively measuring the productivity and output of your in-house resource against external market standards.

4. Media Practice & Industry Advisory

Media is typically the largest line item in a marketing budget and the most complex to navigate. Our specialized Media Practice provides technical oversight and absolute transparency.

  • Media Value Reviews: We assess the efficiency and effectiveness of your media planning and buying, ensuring your agency is delivering maximum value and reach for your investment.
  • Media Industry Advisory: Independent guidance on media transparency, contract compliance, and the navigation of the opaque ad-tech/martech landscape.
  • Contract Compliance: Ensuring that the commercial spirit of your media agreement is upheld through rigorous verification and expert industry perspective.

Why Choose TrinityP3?

For over 20 years, we have helped the world’s leading brands bridge the gap between Procurement, Marketing, and Agencies. Our methodology is superior because it prioritizes ownership over enforcement—we involve the people delivering the process in the design of the process.

  1. Stop the Pitch Cycle: Our Engagement Agreements and Operational Reviews often fix fractured relationships, saving the massive cost of a market review.
  2. Ensure Transparency: Our Media and Commercial Reviews provide the “due diligence” needed to justify your marketing spend to the board.
  3. Drive Velocity: By streamlining your Ways of Working, we help you move from insight to execution faster.

Is your roster performing at its peak?

Customer satisfaction is the goal with every project. Below are just some of the things clients have had to say about working with TrinityP3. Click here to read more Client Testimonials. And because positive client and agency relationships are integral to what we do, make sure you also read our Agency Testimonials.

Case Study

minimun spend

Defining Minimum Spend Thresholds for Marketing Effectiveness – Case study

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The Brief This client engaged TrinityP3 to determine whether minimum investment thresholds should be established for their marketing allocations to ensure campaigns deliver a meaningful impact. With finite budgets distributed across a diverse portfolio and increasing pressure for accountability, the core question was: are smaller, fragmented marketing investments diluting effectiveness, and should funding be consolidated to achieve stronger outcomes? Client Strategic Requirement The client required a framework to guide marketing investment decisions across a spectrum of small and large product categories. Specifically, they needed to: Determine viability: Identify whether a "minimum effective spend" level exists to trigger significant consumer behavioural ...

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Managing Marketing: How To Thrive With A Diverse Marketing Career

Amanda Connors, a seasoned marketer with a diverse career spanning retail, banking, and wellness. Amanda discusses the challenges and transformations in marketing, the importance of resilience, and the strategies she has employed to build successful brands.  From her early days at Myer to her impactful role at Priceline and beyond, ...