Research from Harvard Business Review indicates that outsourcing can cut business costs by 20–30% with direct ROI impact. But traditional outsourcing isn’t the only path. Co-development offers a more collaborative alternative, though it comes with its own challenges like rework, misalignment, delays, and developer frustration.
In this guide, we’ll cover:
- What external development is and when to implement it
- Selecting and integrating external teams without losing velocity
- Best practices for sustaining co-development success
What Is External Development?
External development involves bringing in third-party teams or developers to contribute directly to product development, supporting codebases, infrastructure, or project components lacking internal capacity or expertise.
Three Main Collaboration Models
1. Outsourcing
The most hands-off approach. 92% of G2000 companies utilize IT outsourcing. An external company handles planning through execution with limited internal team involvement and process control.
2. Staff Augmentation
A plug-and-play solution for capacity gaps. Developers integrate into your existing teams for quick scaling without long-term commitment. It requires strong onboarding processes.
3. Co-Development
The most collaborative and strategic model. It combines internal and external dedicated teams. It requires upfront effort (expectations, requirements, tools), but builds trust, speeds delivery, and produces better results.
When You Need External Development
- Building and launching new products
- Covering technical expertise gaps
- Meeting tight or high-stakes deadlines
- Easing internal team workload
Chrono platform provides capacity on demand with dedicated squads and vetted talent.
Benefits and Risks of External Development
Benefits
- Faster delivery through team extension without overloading internal staff
- Access to niche technical skills lacking internally
- Flexible resourcing matching changing business requirements
Risks
- Misalignment between internal and external teams causing friction
- Delays from slow onboarding or time zone differences
- Security, intellectual property, and code quality concerns
Chrono delivers real-time insights into delivery velocity, time usage, and contributor activity across teams.
What to Evaluate When Choosing an External Development Team
1. Domain Expertise in Your Product Area
Select developers with experience on similar platforms and industries. Familiarity with your business model and user expectations means smarter contributions from day one.
2. Proven Delivery Track Record
Request previous client information. Review case studies. Check client reviews. Prioritize complex projects and measurable outcomes.
3. Communication Rhythm and Transparency
Aligned communication style is essential. Verify tools and reporting habits. Understand frequency of check-ins and updates.
4. Time Zone Compatibility
Not a blocker with proper planning. Look for teams with cross-geography experience. Seek overlapping working hours with your technical team.
5. Willingness to Integrate With Your Workflows and Tools
They should plug into your project management platforms, use your existing communication tools, and align with your business processes. This is critical for agile and hybrid models.
Vetting Tips For External Development Teams
Request retrospectives: Don’t accept polished portfolios alone. Ask about handling tough moments, scope shifts, and problem responses.
Start with a trial sprint: Conduct a low-stakes sprint mirroring actual business requirements to expose skill gaps, alignment issues, and integration capabilities.
Check onboarding and async habits: Reliable teams have clear onboarding processes and strong async communication. Request documentation and assess how they handle updates without constant check-ins.
Assess cultural fit: Evaluate soft skills, communication style, and general vibe matching your product team culture.
How to Integrate External Teams Without Losing Velocity
1. Assign an Internal Point of Contact
Designate one person (project manager, engineering lead, or senior developer) as the go-to for:
- Quick decisions
- Regular deliverable reviews
- Maintaining alignment on goals and blockers
2. Establish Clear Responsibilities
Software delivery manager: Sets up dedicated team, monitors skill development, updates staffing changes, ensures seamless communication.
Product owner: Plans backlog, manages requirement changes, checks team work, ties everything to business goals.
Team lead: Supports product owner, helps planning and delivery, validates technical choices, provides practical support.
Scrum master: Clears bottlenecks, sharpens Agile process, minimizes risks, maintains developer and product owner alignment.
Developers, QA engineers, specialists: Execute work and bring the product to life based on their expertise.
3. Sync Sprint Planning Across Teams
Two timelines = twice the confusion.
- Create one shared sprint calendar locking start dates, stand-ups, reviews, and retros
- Use tools like Jira or ClickUp for visibility
- Plan sprints together with the same priorities and deadlines
4. Share Full Product Context
- Provide access to the live backlog, feature roadmap, and product goals
- Walk through priorities in a kickoff session
- Explain how features connect to business objectives
5. Share Coding Standards and Workflows
- Provide access to coding guidelines, CI/CD practices, versioning workflows
- Store everything in a shared repo or internal wiki
- Review during onboarding
6. Run Productive Meetings
- Define clear purpose before sending invites
- Build the agenda around solving specific problems
- Include only people who can move work forward
- Stay anchored to sprint goals and unblock issues fast
- End with clear action items, owners, and timelines
- Push async discussions when live meetings aren’t necessary
7. Implement Transparent Reporting
Transparent reporting enables clear real-time visibility of:
- Project timelines
- Resource usage
- Delivery velocity
- Potential bottlenecks
Tools like Chrono let you add different activities and users for complete project progress and workload distribution views.
8. Communicate Effectively
Without clear communication, tasks slip, assumptions build, and problems hide until they cause damage.
Effective communication improves productivity by up to 25% (McKinsey study).
Top communication tools:
- Slack, Notion, GitHub for async communications
- Chrono for tracking workloads, spotting time drift, catching delivery blockers
- VPNs, encrypted channels, access controls for sensitive work protection
External Development Best Practices
1. Adopt an Agile Mindset
Agile principles emphasize adaptability, teamwork, and real value delivery:
- Deliver customer value early and frequently
- Embrace requirement changes even late in development
- Ship working software frequently through shorter cycles
- Encourage daily business-developer collaboration
- Build projects around motivated individuals
- Use direct, clear communication
- Measure progress by working software
- Maintain sustainable work pace
- Maintain continuous technical excellence
- Keep things simple
- Let self-organizing teams define solutions
- Reflect regularly on improvement
McKinsey Global Survey result: Highly successful agile transformations delivered approximately 30% gains in efficiency, customer satisfaction, employee engagement, and operational performance.
2. Align on Outcomes, Not Just Tasks
- Share the bigger picture beyond tickets
- Help teams understand “why” not just “what”
- Show what success looks like
- Set clear decision-making guardrails
3. Treat External Teams Like Internal Partners
- Invite them to demos, standups, retros
- Keep them connected to product, goals, decisions
- Build bidirectional feedback loops
- Recognize good work like you would internal staff
4. Create a Shared Definition of Done
Set clear expectations around:
- Code quality standards
- Required test coverage
- Documentation updates
- Handoff responsibilities
- Review processes
- Escalation handling
5. Track Workload and Burnout Across All Teams
Monitor:
- Task queue growth
- Sprint velocity changes
- Extra hours tracking
Chrono surfaces workload issues, time drift, and delivery slippage across internal and external teams, enabling early overload detection.
How to Measure Success in External Development
1. Track Key Performance Indicators (KPIs)
Cycle time by team: Measures speed from started to shipped, indicating team collaboration effectiveness.
DORA metrics: Includes deployment frequency, lead time for changes, change failure rate, time to recovery.
Code review response time: Fast reviews maintain momentum and prevent task pile-ups.
Feature delivery velocity: Measures real product work shipped, reflecting roadmap progress.
Cost per deployable unit: Tracks shipping efficiency and scaling cost-effectiveness.
Resource allocation: Ensures right people, time, and budget focused where most impactful.
ROI: Determines whether external team investment drives real business wins.
2. Use Shared Dashboards
Shared dashboards showing timelines, tasks, and budgets enable:
- Early issue detection
- Faster decision-making
- Alignment on real priorities
3. Run Quarterly Retros
Quarterly reviews with both teams address:
- Communication breakdowns
- Handoff slowdowns
- Early crack detection before they become blockers
Final Thoughts
When external teams are set up the right way, they don’t feel external at all. With the right partner, clear expectations, and real visibility, co-development becomes an extension of your house team, not a separate operation.
Chrono provides live insights across blended teams for performance tracking without micromanagement.
Sign up to Chrono Platform and start building smarter with external teams.
FAQ
What is external development?
External development means bringing in outside developers to help build or support your product. It’s more than outsourcing one task; it’s about partnership.
What’s the difference between co-development and outsourcing?
Co-development is partnership with internal and external teams working side-by-side. Outsourcing means handing over the project.
How do I keep control of product quality with external teams?
Set up code reviews, use strong testing pipelines, sync sprints, and track progress with tools like Chrono.
When should I consider external development?
When your internal team is overloaded or needs quick access to skills that aren’t available in-house.