1. Response to Proposal for: CDN Integration Requirements Submitted to: LinkedIn Date: May 4, 2012

2. 2012 Level 3 Communications, Inc. All rights reserved. This document is an unpublished proprietarywork of Level 3 Communications, Inc. and its subsidiaries.This document contains certain confidential and proprietary information of Level 3 Communications, Inc,its subsidiaries, and certain third parties and may not be copied or disclosed, in whole or in part, withoutthe prior written consent of Level 3 Communications, Inc. Any permitted copies made of this documentshall contain the copyright notice, proprietary markings and confidential legends of Level 3Communications, Inc.The service marks used in this proposal are registered service marks or service marks of Level 3Communications, Inc., its subsidiaries, or third parties in the United States and/or other countries.Level 3 Communications, LLC (Level 3) has made every effort to provide accurate and relevantinformation in this proposal. Occasionally, however, it is necessary for Level 3 to make assumptions inorder to formulate a timely proposal. Level 3 therefore reserves the right to correct any errors included inthis proposal. Notwithstanding anything in this proposal to the contrary, the terms hereof are non-bindingand Level 3 shall be legally bound only upon execution of a mutually agreed definitive agreement. 2012 Level 3 Communications, Inc. All rights reserved. Proprietary and Confidential -i-

3. Table of Contents1. COMMERCIAL RELATIONSHIP ............................................................................................................... 12. GENERAL TECHNICAL REQUIREMENTS ................................................................................................. 6 2012 Level 3 Communications, Inc. All rights reserved. Proprietary and Confidential - ii -

4. May 4, 2012Ian Van HovenDirector, Technical OperationsLinkedInEmail: ivh@linkedin.comPhone: 650-605-0559RE: Proposal for CDN RequiremntsDear Mr. Van HovenLevel 3 Communications is pleased to present this response to your Request for Proposal.We have delivered one soft copy of our response to your attention via email.Should you have any questions or require additional information, please do not hesitate to contact me at(414) 294-6923.Sincerely,Christopher KennonChristopher KennonAccount DirectorLevel 3 Communications, LLCcc: Seth Pederson, Vice President, Sales, Level 3 Communications Pam Hayes, Proposal Manager, Level 3 Communications 2012 Level 3 Communications, Inc. All rights reserved. Proprietary and Confidential - iii -

5. 1. Commercial RelationshipLegalCo-executed mutual NDA required up frontCo-executed MSA defines the macro relationship including, but not limited to, the following: T&Cs,SLAs, AUP, Change of Control provision, etc.Additional legal relationship changes added via co-executed MSA addendumIndividual service orders provide framework for discrete services of defined termLevel 3 Response:Level 3 has read and complies.ContractualTerm: 12-36 monthsCommit...Basis: global revenue commit for length of term: with quarterly minimums, and monthly billing forservices provided in arrearsScope: encompasses all spend (e.g., DNS, storage, delivery, data, other services, etc.), regardless oflocationPricing...Delivery...Basis: monthly $/Mbps @ 95th %ile (per 5-minute epoch)Price Ramp: quarterly reductions for length of termScope: bill for edge-to-user delivery onlyNo billing for "peer traffic" (i.e., edge-edge, edge-parent, edge/parent-origin, etc.)Storage...Basis: monthly $/GB based on max sustained disk utilizationPrice Ramp: annual reductions for length of termRenewal...No auto-renewal provision; auto-extensions instead (see below)Service Orders include...Mutually-defined renewal period (typically the final 3-6 months of contracted term)Option for monthly extension(s) at final pricing with decreasing commits for 3-6 months followingrenewal period if no agreement reachedSLA...Commit forgiveness for SLA violation: as defined in MSALevel 3 Response:Please refer to the Level 3 pricing provided below: 2012 Level 3 Communications, Inc. All rights reserved. Proprietary and Confidential -1-

6. NA/EUTerm: 12 months 24 months 36 monthsDelivery Monthly CDR 2,000 mbps 2,000 mbps 2,000 mbps CDR $/mbps (95th%) $11.25 /mbps $8.50 /mbps $7.25 /mbps Burst above CDR $/mbps(95th%) $11.25 /mbps $8.50 /mbps $7.25 /mbps Monthly Committed Spend $22,500 MRR $17,000 MRR $14,500 MRR Usage Only Ramp-Up 2.0 months 2.0 months 2.0 months Installation $1,500 NRR $1,000 NRR $0 NRRStorage GB GB GB CDR 5,000 Stored 5,000 Stored 5,000 Stored $/GB Stored $0.25 /GB $0.20 /GB $0.18 /GB Monthly Committed Spend $1,250 MRR $1,000 MRR $875 MRR*SLL Traffic charged at same $/mbps rate, applies to commit. SSL Certificates: $1000 MRR/eaGlobal DeliveryTerm: 12 months 24 months 36 monthsDelivery Monthly CDR 2,000 mbps 2,000 mbps 2,000 mbps CDR $/mbps (95th%) $15.75 /mbps $11.90 /mbps $10.15 /mbps Burst above CDR $/mbps(95th%) $15.75 /mbps $11.90 /mbps $10.15 /mbps Monthly Committed Spend $31,500 MRR $23,800 MRR $20,300 MRR Usage Only Ramp-Up 2.0 months 2.0 months 2.0 months Installation $1,500 NRR $1,000 NRR $0 NRRStorage GB GB GB CDR 5,000 Stored 5,000 Stored 5,000 Stored $/GB Stored $0.25 /GB $0.20 /GB $0.18 /GB Monthly Committed Spend $1,250 MRR $1,000 MRR $875 MRR*SLL Traffic charged at same $/mbps rate, applies to commit. SSL Certificates: $1000 MRR/ea*International SSL traffic subject to capacityverification*Does not include MainlandChina 2012 Level 3 Communications, Inc. All rights reserved. Proprietary and Confidential -2-

7. *Assumes Distribution Profileas follows: NA/EU 74% LATAM 9% APAC 6% ROW 11% Total 100% Team and Communication Dedicated account exec, SE & technical operations manager (or equivalent) Level 3 Response: Level 3 will assign a dedicated team for each step in the process of turning up your network transport services. Each team member is responsible for managing a number of accounts. We will assign additional resources or focus team members as necessary based upon your specific requirements. The following persons are all part of customers sales and customer service team: Dedicated Customer Account Team: Account Director (AD) Christopher Kennon Christopher, your Account Director for is responsible for the overall relationship. He is ultimately responsible for your satisfaction from sales though implementation, and during continuing service throughout the relationship. He has the support of his sales VP to marshal all necessary resources to ensure the success of the Level 3-customer relationship. 2012 Level 3 Communications, Inc. All rights reserved. Proprietary and Confidential -3-

8. Christopher will provide information about Level 3 services and will gather and confirm specificationsand requirements elements necessary to submit an accurate order. Executing all quotes and ordersfor new and/or additional services, he serves as a general liaison between LinkedIn and Level 3, andmakes sure all necessary resources are applied to the general implementation of services.Sales Engineer (SE) John CrockerJohn, the dedicated Sales Engineer, is responsible for collaboration with you on solution design toensure technical requirements are met. He will work with you to identify technical options and definetechnical requirements for service implementation. Understanding your existing network, key locationsand technical needs, John will provide all technical information about Level 3 services and networksolutions to support your requirements. He manages the engineering portion of the service quote, theinventory and capacity process for new orders, and interfaces with Level 3 Customer Project Managersto ensure timely service delivery. He also provides product/technology consultation and communicatesthe technical details necessary to implement the services properly.Customer Care Manager (CCM) Mike GoodwinThe CCM is your single point of contact responsible for the day-to-day implementation issues. TheCCM plans, directs and coordinates activities to support project goals and objectives. Verifying andmanaging the order processing for new and existing order, the CCM reviews all documents to ensurethe necessary entrance criteria has been received and ensures all documents are properly filed. TheCCM oversees the assignment of capacity, testing and activation of Level 3 services and tracks theorder status for timely delivery. If any issues arise during service installation, the CCM coordinatesresolution and keeps customers informed of the status of all stages of the ordering/provisioningprocess.The key responsibilities of the CCM include: Gather and confirm specifications and requirements Project manage pending orders through installation process to help ensure timely delivery Develop implementation plan Identify, communicate and manage risks Communicate critical dates Manage internal departments to help meet Customer Commit Date (CCD) Coordinate pre-sale and post-sale site visits Provide a clear escalation path Resolve Jeopardy Management issuesCustomer Service Management (CSM) Technician Catherine RafiiActing as the single point-of-contact for technical issues is the Customer Service Management (CSM)Technician. Level 3 trains CSM Technicians to address both technical and business issues - they arehighly skilled technical professionals. They understand the importance of maintaining networkavailability and resolving problems quickly, and have the skills to assist customers with all aspects oftheir Level 3 service. The CSM Technician is supported by a team that is available on a 24 hour basis,partnering with the core Network Operation Centers, Field Operations and third party suppliers toensure full resolution of problems.The CSM Technician trouble shoots and resolves service issues for all products, providing customerswith status updates proactively and in response to customer calls. Managing communication and statusupdates for major outages and network events, the CSM Technician follows established escalationprocesses for issue resolution.CDN Solutions Architect Aaron DiazSolution Architects create CDN solutions meeting requirements of companys top customers. SolutionArchitects act as consultative, trusted advisors, balancing goals of quality, feasibility and cost- 2012 Level 3 Communications, Inc. All rights reserved. Proprietary and Confidential -4-

9. effectiveness for customers. They will assimilate customer requirements, create solutions, assemblecosts, and participate in business case analysis.To achieve these goals, Solutions Architects will review customer business requirements; clarifyambiguous requirements with sales and clients, ensuring the solution resolves underlying client issuesand business goals.Solutions Architect analyzes the customers business needs and develops solutions based onknowledge of customer and Level 3 CDN services and platform capabilities. They will complete highlydifficult, custom designs, employing creativity in solutions to bring together multiple products intocustomer solutions. Recurring status call to discuss issues, performance, ongoing projects, relationship; bi-weekly to start Quarterly F2F meetings to discuss relationship, strategic initiatives, traffic forecast, etc. Monthly "CDN Report Card" will provide in-depth performance and availability trends, including data for all LinkedIn CDN partnersLevel 3 Response:Level 3 has read and complies. Your Level 3 account team will hold regular meetings (depending uponyour requirements and schedule) during the term of this agreement to review network performance,performance improvement alternatives and alternative network solutions, billing, and providerecommendations to reduce costs. Discussions will include all usage, bandwidth, quality and billingreports, both current and historical. 2012 Level 3 Communications, Inc. All rights reserved. Proprietary and Confidential -5-

10. 2. General Technical RequirementsTechnical IntegrationAs part of any RFP process, prospective providers are expected to discuss and explain in detail howtheir production CDN platform and operational processes support and provide the followingservices/features/functionality.A portion of any initial technical/commercial RFP review will be dedicated to covering these topics.Production User-Facing ServicesObject TypesLinkedIn leverages CDNs to support two primary use-cases...Static: small-catalog, highly-cacheable, small-file static content (e.g., JS, CSS, etc.)Media: UGC, large-catalog, long-tail, small-file media (e.g., profile pix, ad creatives, story imagery, etc.)Level 3 Response:Read and complies.PlatformEdge Delivery...Software: provider-created and/or 3rd-partyHardware: systems, network, storageLevel 3 Response:This is proprietary information.PoP Map: locations, system count, network providers (IP transit and peering), network capacity bothfor DNS & HTTP PoPsNote that LinkedIn geo coverage needs vary per RFP; please refer to the RFP for detailsLevel 3 Response:We have provided our coverage map below. 2012 Level 3 Communications, Inc. All rights reserved. Proprietary and Confidential -6-

11. We have also provided the above map as an attachment below: (Double click on the paper clip to open the attachment)2012_global_cdn_ma p.pptLogging: edge collection methodology/timing, push v pull, per-hit v aggregate, polling interval, storage,rotation, etc.Level 3 Response:Level 3s log collection is pull technology. For Raw Log (ALR-Automatic Log Retrieval) gathering,logs are delivered to a log collection master on a best-effort basis. The master pulls these files onceper minute and deposits these files onto a server which LinkedIn can download. When these logsbecome available to the ALR client (either Windows or Linux), the clients are typically recommended topull these once per hour. Once downloaded and validated by the client ALR software, these logs arepurged from the master. The information is stored on our logging clusters for a maximum period of 5days, at which time they are purged. This information is collected on a per request basis. 2012 Level 3 Communications, Inc. All rights reserved. Proprietary and Confidential -7-

12. Security: URL-signing/validation, DDoS prevention, administrative access control, IDS, etc.Backend...Level 3 Response:Level 3 CDN edge nodes use Level 3s IP network for transport, and as such are protected by Level 3sextensive IP security systems, redundant 24 x 7 x 365 Network Operations Centers, and proactiveDDOS mitigation processes and procedures. Performance monitoring of all Nameserver clusters feedsback into an alarming system that would quickly detect and alarm on the significant traffic increases thatcome with any DDOS attempt, and Level 3s IP Security team would immediately become involved inmitigating an attack should that be the underlying reason for the traffic increase.Portal: architecture (hardware and software), uptime, maintenance schedule/methodology, security/authmodel, mobile access, ticket-submission/tracking, change/revision-control (audit trail)Level 3 Response:Level 3 has read and complies.Logging: collection, storage, redundancy, delivery (logs as service), aggregation, historical access, etc.Level 3 Response:Level 3s log collection is pull technology. For Raw Log (ALR-Automatic Log Retrieval) gathering,logs are delivered to a log collection master on a best-effort basis. The master pulls these files onceper minute and deposits these files onto a server which LinkedIn can download. When these logsbecome available to the ALR client (either Windows or Linux), the clients are typically recommended topull these once per hour. Once downloaded and validated by the client ALR software, these logs arepurged from the master. The information is stored on our logging clusters for a maximum period of 5days, at which time they are purged. This information is collected on a per request basis.Database...HA & scaling strategy (i.e., redundancy, replication, failover, sharding, pruning/collapsing/aggregation,etc.)Use of NoSQL technologyUse of memcachedLevel 3 Response:Level 3 has read and complies.Request RoutingAbility to parse/leverage decorated hostnames (e.g., encoded client IP, ISO country code, etc.) foroptimized rendezvousPlease refer to "CDN URL Formats" (provided separately)Level 3 Response:Level 3 has read and complies. 2012 Level 3 Communications, Inc. All rights reserved. Proprietary and Confidential -8-

13. DDoS prevention/mitigation service included as baseline DNS/HTTP delivery functionality/feature, notas value-add/upliftLevel 3 Response:Level 3 does not support at this time.APIs: see belowLevel 3 Response:Level 3 has read and complies.Object DeliveryTransport: support both HTTP and HTTPSSSL via CDN-owned/managed wildcard certificate (e.g., *.s.cdnX.licdn.com)Compression: ability/flexibility to store media compressed or uncompressed, and deliver mediacompressed (client permitting) oruncompressedCache Control: ability to dynamically inherit cache-control settings from the LinkedIn originOrigin: ability to support a 2-tier origin model, with CDN storage as Tier 1 origin, LinkedIn storage asTier 2 originSupport for "pull" preferred, but "push" acceptableSecurity: ability to support signed/expiring URLsAPIs: see belowLevel 3 Response:Level 3 has read and complies.Origin StorageRedundancy: geo-dispersed storage footprint with minimum N+2 redundancyVirtualized: not discreteAPIs: see belowLevel 3 Response:Level 3 has read and complies. Please refer to the global coverage map we have provided above.Supporting ServicesAPIsPolling...Request: REST over HTTPSResponse: JSONSecurity...Dedicated API userCredentials and/or 1-time expiring session token required at instantiationMetrics...Request Routing (DNS)...Volume: max DNS QPS (queries/sec) aggregate, per-domain and per-countryObject Delivery (HTTP)...Throughput (Mbps): max per 5-minute epoch aggregate, per-domain and per-countryVolume (QPS)... 2012 Level 3 Communications, Inc. All rights reserved. Proprietary and Confidential -9-

14. Max: aggregate, per-domain and per-countryBy Response Code: 20x, 30x, 40x, 50x aggregate, per-domain and per-countryPurge...Types: soft (invalidate/IMS) and hard (nuke)Level 3 Response:Provided below are the requirements supported by Level 3 in regards to API.API general info Requests are REST over HTTPs Response is currently XML; we have discussed also offering JSON but dont have a planned date yet Security is provided via a key and shared secret that is used to sign the HTTPS requestsAPI : Polling Not sure what this means. Real-time traffic values? If so, we supportAPI : Metrics Request Routing DNS: we dont explicitly provide a count of DNS QPS, but we do provide as part of CDN usage a count of PEAK requests/sec to a specific domain for a requested time window Req/sec is not currently available by requestor (end user) country Object Delivery HTTP Throughput Mbps available per domain, per region (NA, EU, South America, etc) and per CDN location but NOT per end user country at 5 min samples for up to 2 days time Volume (QPS): see 4a above. It is available in a real time measurement, by CDN location By response code: aggregate per domain and by CDN location in real-timePurge Support invalidations through API and portal Purge supported through CDN SupportStorage Upload...Upload Target: dynamic storage target ID; inputs = file count, total footprint, target geoDisk: capacity & utilizationTicketing: submit, update, viewLevel 3 Response:Level 3 does not support APIs to the Origin Storage platform at this time.Configuration Management and PropagationRevision Control: visibility into, rollback procedure/timing, audit trail, etc.Propagation: propagation time SLA; request/approval process; staging; sanity/smoke-testmethodologies, etc.Level 3 Response:Level 3 does not currently support this, but have plans to support in 4Q 2012. 2012 Level 3 Communications, Inc. All rights reserved. Proprietary and Confidential - 10 -

15. Staging EnvironmentNon-production environment where changes (new software, revised configs, etc.) can be safely testedby provider and/or LinkedInPhysically and logically separate/distinct from productionLevel 3 Response:Level 3 has read and does not comply. We can accommodate testing and beta scenarios. We will behappy to discuss this further with LinkedIn.Operating ProcessesSoftware Development and ReleaseProcess for customer feature request intake, ranking, prioritization, etc.Release cadence/velocity: minor, majorDevelopment methodology: SDLC, unit test coverage/philosophy, automated regression methodology,etc.Release methodology: phased v monolithic, customer notification (active v passive), etc.Level 3 Response:Scheduled MaintenanceRoutine maintenance and repair functions consist of: Remote monitoring of facilities and infrastructure 24 hours a day, 7 days a week x 365 days a year. For fiber, this entails monitoring of the fiber sheath for continuity and proper grounding. Facility monitoring will include various environmental alarms. Patrol of the network route on a regularly scheduled basis. Regularly scheduled patrols will occur at least once a month. Cable Protection Bureau. The objective of this internal organization is to protect Level 3s buried facilities, particularly during construction activities on or around our network. The bureau conducts cable and conduit locate activities using advanced knowledge of the location of Level 3 fiber and applying mapping technologies to dig requests to determine if the location of that fiber is required. The bureau also investigates trouble tickets, and assists in investigating property damages. It collects Near Miss Reports from Operations, sends warnings to contractors and enters the reports into the NTDPC Near Miss Database. The bureau is staffed 24 hours, 7 days a week and is accessible through a toll-free number. Notification signage. Level 3 maintains sign posts along the system right-of-way that provide the number of the local Call-Before-You-Dig organization and the toll-free number for Level 3s Call- Before-You-Dig program. Technical responsiveness. To facilitate rapid response to maintenance issues, Level 3 assigns fiber maintenance technicians to locations along the network routes. Monthly preventative maintenance programs. These include AC and DC power level readings, backup power testing and general location inspections.Scheduled maintenance that is expected to produce any signal discontinuity is coordinated with ourcustomers. Generally, this work will be scheduled after midnight and before 6 a.m. Our global changemanagement team manages all change requests.Unscheduled MaintenanceIn certain circumstances, the need for unscheduled maintenance may occur: Emergency Unscheduled Maintenance. A response to an alarm identification by our NOC, notification by Regional Network Operations and Security Centers, or notification by any third party of any failure, interruption, or impairment in the operation of fibers within the Level 3 system, or any 2012 Level 3 Communications, Inc. All rights reserved. Proprietary and Confidential - 11 -

16. event imminently likely to cause the failure, interruption, or impairment in the operation of fibers within the your network. Non-Emergency Unscheduled Maintenance. A response to any potential service-affecting situation to prevent any failure, interruption, or impairment in the operation of fibers within your network not covered by scheduled maintenance.At sites requiring emergency unscheduled maintenance activity, maintenance personnel will arrivewithin four hours from the time we become aware of the event, unless delayed by Force Majeure.Technicians responsible for initial restoration of a cut cable carry on their vehicles the typicallyappropriate equipment that would enable a temporary splice.We also maintain and supply an inventory of spare cable in storage facilities at strategic locations tofacilitate timely restoration.Our main objective will be to complete a permanent restoration. The following factors will be used todetermine whether a restoration is permanent or temporary: Time: If performing a permanent restoration significantly exceeds the customer SLA, then a temporary restoration may be performed. Location: If the cut is located where a permanent restoration is difficult or impossible without significantly exceeding the SLA, temporary restoration may be required. Materials: If the materials needed for a permanent restoration are not readily available, a temporary restoration may be required.The decision of whether to complete a permanent or temporary restoration is at the discretion of thelocal on-site Outside Plant Management team. Safety hazards, natural disasters, weather, and federal,state, and local laws, etc., are additional factors that may influence the decision to perform a temporaryrestoration.Monitoring and MeasurementTools in useThresholding and alerting methodologyTrend observanceAlert distribution, consumption, triage, escalationEvent correlationLevel 3 Response:Response:Level 3s unified and highly advanced NOC uses Nortels Preside Network Management System (NMS)for 24-hour surveillance and operation of all network elements. The Preside system integrates networkelement managers, alarm aggregation, and network managers into one platform for greater networkoperations efficiency. We have a dedicated 100 Mbps management communications network runningon its own fiber pair. This network provides a high-capacity communications system completelyindependent of the transmission equipment and supports remote video monitoring, access security, andenvironmental monitoring (for example, temperature and fire alarms). It can also provide connectivityservices for customer equipment in remote sites. We are the single operator for our entire network, fromMetro POP to Metro POP. With a homogeneous network comprised of identical fiber and a singlemanagement system, Level 3 provides the highest level of operations excellence.Transport Service: Manual Monitoring ToolLevel 3s network management for private line transport services is comprised of off-the-shelfmonitoring using the NETeXPERT network management application and proprietary monitoring andmanagement tools (NTV and Trailblazer). 2012 Level 3 Communications, Inc. All rights reserved. Proprietary and Confidential - 12 -

17. The Agilent NETeXPERT product suite delivers root-cause and operational impact information tonetwork operators, customer service representatives, and umbrella management systems through itsunique understanding of true network connectivity across ADM and DACS transport equipment.The Level 3 NOC contains configurable trouble alert screens that network technicians can use todetermine network anomalies immediately so that they can take corrective action.Transport Service: Automated Network Monitoring ToolIn addition to manual monitoring performed by network operations center technicians, Level 3 hasdeveloped a proprietary automated network monitoring tool that receives alarms and other networkevents in real-time from the NETeXPERT framework.This framework uses a high-speed scriptable rules engine to make business determinations aboutservice-impacting events and take the actions necessary to alleviate the problem.In most cases of network trouble, the automated network-monitoring tool opens a trouble-ticket,forwards the trouble ticket to the appropriate work queue, and notifies network technicians through e-mail or pager alerts. In some circumstances, the automated network management tool logs into therouter or switch reporting network trouble and performs scripted tasks to provide context and narrow theproblem scope. This allows the network technician to understand the problem better up front instead ofperforming several rudimentary tasks to determine the root cause of the problem.Level 3s system monitoring includes HVAC, battery plant, rectifiers, generators (and fuel tank levels),power systems, fiber cable sheath monitoring, surge arrestor, and utility power.Proactive Monitoring Tools and ScriptsAs a matter of standard operating procedure, Level 3 has deployed proactive monitoring tools andscripts to ensure optimum network performance and associated customer reporting on key operationalservice level metrics. Process groups include the following: Collect/Organize Data: Riversoft monitoring tool analyzes interface information and provides alarm information if performance thresholds are violated. Optional BRIX probes collect data every 500 ms and feed back to centralized server. Evaluate Data: Data is evaluated real time to identify congestion limits, packet loss and latency. Thresholds have been pre-defined to trigger event notifications via the NMS system or e-mail (based upon severity). Data is also evaluated weekly, monthly, quarterly to identify trends and support capacity planning and chronic events. Report Performance: All data is presented to the Network Operations Center in real-time. Customers can access performance related data (updated every 15 minutes) on an online customer portal. Change Management: Data is trended and used by operations engineering and capacity planning to identify any changes that should be performed to avoid potential future network events.In the event a performance threshold is breached, this will generate an alarm to the Riversoft NMSsystem in the NOC and the event management process will be performed. 2012 Level 3 Communications, Inc. All rights reserved. Proprietary and Confidential - 13 -

18. ConfigurationSLA: 15-minute global propagation from T0 (LinkedIn request submission)Change-Control...Audit Trail: for all historical configsRollback: simple, fastLevel 3 Response:Level 3 complies. Please refer to the service levels defined in the CDN Service Schedule providedbelow. FORM - Level 3Content Delivery Network Service Schedule 2-1-12.pdfOutage HistoryList the three (3) most recent customer-impacting outages on your platform, across the followingfunctional product areas...Edge Delivery: DNS, HTTP/S, etc.Storage: including data loss, origin service failure, upload/download failure, etc.Control/Analytics: including logging, portal, database, etc.Level 3 Response:Level 3 has read and complies.Technical Support24x7x365 Coverage: ability to engage support (initiate a ticket) via phone, ticket, emailResponse-Time SLA: 5 minutes for "urgent" (P0) ticket submissionOn-Call: methodology, tooling & internal SLA for contacting key Engineering & Operations personnelduring a crisis/outageNOC/NOC: establish and cultivate cross-org NOC relationship/integrationProactive contact by CDN NOC to LinkedIn NOC (and vice-versa) in event of outage/issuesLevel 3 Response:Level 3 has read and complies. However, current SLA response time is 15 minutes, but we candiscuss further with LinkedIn. We have provided additional technical support details below.The Level 3 Network Operations Center (NOC) is responsible for all facilities and network management,monitoring, and repair. Level 3 staffs highly trained operations managers and network technicians atregional monitoring centers and these centers enable geographically diverse, 24-hour a day, year-round The NOC also provides proactive monitoring of traffic across the Level 3 Network, and throughthis monitoring, we can identify potential problems and provide resolution in a more timely fashion.Level 3s CDN Support Services include the following: 1. Staffed 24 hours a day, seven days a week, 365 days a year. a. Locations in the US include Tulsa, OK and Broomfield, CO 2. Contact a. Email 15 minute response time i. cdn.support@level3.com 2012 Level 3 Communications, Inc. All rights reserved. Proprietary and Confidential - 14 -

19. b. Phone < 5 minute response time i. 1-877-4Level3 (877-453-8353), Option 2, Option 5 3. Standard Support Ratio a. Pooled Support ~25 customers to 1 Support Rep 2. Mean time to repair a. 12 hour goal for all services, however, this is dependent on the issue 3. Typical response times based on the urgency that is determined and agreed between the customer and Level 3 a. Urgent e.g., Global issues, affecting multiple end users, repeatable 1 hour b. High e.g., Isolated incidents, impacting a certain region 1 hour c. Medium e.g., isolated incidents that are not repeatable 12 hours d. Low e.g., configuration changes, performance monitoring, business issues 24 hours 4. Typical frequency of updates to a customer a. Urgent 1 hour minimum or as required by customer b. High 1 hour minimum c. Medium 12 hours d. Low 24 hours 5. Escalation a. Urgent Priority issues immediately escalated to management b. High and Medium Priority issues escalated after 24 hoursWe have provided for your reference a copy of the Level 3 CDN Customer Handbook for an overview ofthe support we provide our customers. The Customer Handbook offers a quick-reference guide to: Account Management Order Management Service Activation Billing CDN Support Media PortalCDNCustomerHandb ook-1.docx 2012 Level 3 Communications, Inc. All rights reserved. Proprietary and Confidential - 15 -